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Associations between anxiety and functional disability in older adults: a cross-sectional study

Abstract

Objective

to estimate the prevalence of anxiety in older adults and its association with different levels of functional disability in a small town in the state of Paraiba, Brazil.

Method

a cross-sectional analytical study was carried out of 233 randomly-selected older users of the Family Health Strategy program. Data were collected using the World Health Organization Disability Assessment Schedule 2.0 and the Geriatric Anxiety Inventory. Results were analyzed using descriptive and bivariate statistics adopting a significance level of p < 0.05.

Results

Overall, 48.1% of the participants had some degree of selfreported anxiety, with significantly higher levels among women (mean rank = 128.11; p = 0.002). An association was also found between severe anxiety level and severe disability level (p < 0.001).

Conclusion

the high prevalence of different degrees of geriatric anxiety and its association with severe functional disability indicates the coexistence of psychoemotional and motor alterations. These findings suggest the need to break the chain of underdiagnosis and strengthen the implementation of specialized interventions in the field of gerontology and geriatrics.

Keywords
Aging; Aged; Anxiety Disorders; International Classification of Functioning; Disability and Health

Resumo

Objetivo

estimar a ocorrência de ansiedade em pessoas idosas e sua associação com os diferentes padrões de incapacidade funcional em um município de pequeno porte do estado da Paraíba, Brasil.

Método

estudo transversal e analítico realizado com 233 idosos vinculados à Estratégia Saúde da Família e aleatoriamente selecionados. Os dados foram coletados por meio dos instrumentos World Health Organization Disability Assessment Schedule 2.0 e o Inventário de Ansiedade Geriátrica, cuja análise foi subsidiada pela estatística descritiva e bivariada, considerando significância quando p<0,05.

Resultados

48,1% dos idosos apresentaram algum nível de ansiedade autorreferida, com níveis significativamente maiores entre as mulheres (média dos postos = 128,11; p = 0,002). Também se constatou associação entre o padrão de ansiedade grave com o padrão de incapacidade grave (p < 0,001).

Conclusão

a elevada ocorrência de diferentes graus de ansiedade geriátrica e sua associação com a incapacidade funcional grave sinaliza a coexistência entre alterações psicoemocionais e motoras, sugerindo a necessidade de romper a cadeia do subdiagnóstico e fortalecer a implementação de intervenções especializadas no campo da gerontogeriatria.

Palavras-Chave:
Envelhecimento; Idoso; Transtornos de ansiedade; Classificação internacional de funcionalidade; incapacidade e saúde

INTRODUCTION

Geriatric Anxiety is emerging as one of the most important health issues in aging, with a prevalence of 15-52% worldwide11 Zhao W, Zhang Y, Liu X, Yue J, Hou L, Xia X, et al. Comorbid depressive and anxiety symptoms and frailty among older adults: Findings from the West China health and aging trend study. J. Affect. Disord. 2020; 277:970-6. Disponível em: https://doi.org/10.1016/j.jad.2020.08.070.
https://doi.org/10.1016/j.jad.2020.08.07...
. Although anxiety occurs across virtually all stages of life, anxiety disorders tend to be more severe in late life and are commonly associated with a disability outcome in older adults22 Dong L, Freedman VA, Mendes LCF. The association of comorbid depression and anxiety symptoms with disability onset in older adults. Psychosom Med. 2021;82(2):158–64. Disponível em: https://doi.org/10.1097/PSY.0000000000000763.
https://doi.org/10.1097/PSY.000000000000...
. Anxiety is one of the leading causes of work-related and social absence22 Dong L, Freedman VA, Mendes LCF. The association of comorbid depression and anxiety symptoms with disability onset in older adults. Psychosom Med. 2021;82(2):158–64. Disponível em: https://doi.org/10.1097/PSY.0000000000000763.
https://doi.org/10.1097/PSY.000000000000...
and constitutes a risk factor predisposing individuals to limitations comparable to or more severe than well-established chronic diseases22 Dong L, Freedman VA, Mendes LCF. The association of comorbid depression and anxiety symptoms with disability onset in older adults. Psychosom Med. 2021;82(2):158–64. Disponível em: https://doi.org/10.1097/PSY.0000000000000763.
https://doi.org/10.1097/PSY.000000000000...
,33 Fernandes MA, Ribeiro HKP, Santos JDM, Monteiro CFS, Costa RS, Soares RFS. Prevalence of anxiety disorders as a cause of workers’ absence. Rev Bras Enferm. 2018;71(Suppl 5):2213-20. Disponível em: http://dx.doi.org/10.1590/0034-7167-2017-0953.
https://doi.org/10.1590/0034-7167-2017-0...
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The aging process is accompanied by a gradual natural decline in function among older individuals, reducing their capacity for adaptation and rendering them less able to carry out activities of daily living involving self-care, acquiring new skills and interaction in society11 Zhao W, Zhang Y, Liu X, Yue J, Hou L, Xia X, et al. Comorbid depressive and anxiety symptoms and frailty among older adults: Findings from the West China health and aging trend study. J. Affect. Disord. 2020; 277:970-6. Disponível em: https://doi.org/10.1016/j.jad.2020.08.070.
https://doi.org/10.1016/j.jad.2020.08.07...
,44 Ruscio AM, Hallion LS, Lim CCW, Gaxiiola SA, Hamzawi AA, Alonso J, et al. Cross-sectional Comparison of the Epidemiology of DSM-5 Generalized Anxiety Disorder Across the Globe. JAMA Psychiatry. 2017;74(5):465-75. Disponível em: http://dx.doi.org/10.1001/jamapsychiatry.2017.0056.
https://doi.org/10.1001/jamapsychiatry.2...
. However, when aging is associated with psycho-emotional disorders and pre-existing comorbidity, there is a greater degree of frailty and impairment of autonomy and independence, making older individuals more susceptible to dysfunction and disability44 Ruscio AM, Hallion LS, Lim CCW, Gaxiiola SA, Hamzawi AA, Alonso J, et al. Cross-sectional Comparison of the Epidemiology of DSM-5 Generalized Anxiety Disorder Across the Globe. JAMA Psychiatry. 2017;74(5):465-75. Disponível em: http://dx.doi.org/10.1001/jamapsychiatry.2017.0056.
https://doi.org/10.1001/jamapsychiatry.2...
,55 Date CVDV, Gulpers B, Zelst WV, Kohler S, Comijs HC, Shoevers RA, et al. Anxiety in Late-Life Depression: Determinants of the Course of Anxiety and Complete Remission. Am J Geriatr Psiquiatria.2021;29(4):336-47. Disponível em: http://dx.doi.org/10.1016/j.jagp.2020.12.023
https://doi.org/10.1016/j.jagp.2020.12.0...
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Thus, functioning can be defined as a dynamic relationship which encompasses all structures of the body, activities performed, health status, environmental factors, and the people around the individual, while disability denotes difficulty or limitation in performing everyday activities in some domain of life within the expected timeframe for humans66 Matos FS, Jesus CS, Carneiro JAO, Coqueiro RS, Fernandes MH, Brito TA. Reduced functional capacity of community-dwelling elderly: a longitudinal study. Cien Saude Colet. 2018;23(10):3393-401. Disponível em: http://dx.doi.org 10.1590/1413-812320182310.23382016
https://doi.org/...
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Hence, maintaining psycho-emotional wellbeing and functional capacity in late life represents a core concern in the field of aging, given its implications can have a direct impact on the older individual, their family and the community. Moreover, these disorders increase the risk of death in the older population, and lead to higher rates of hospitalization and burden for the public health system.

This scenario reveals the need to identify scientific evidence elucidating the existence of a relationship between aging, anxiety and functional capacity. This knowledge can help support the provision of quality specialized care to the older population, especially by conceptualizing the coexistence of anxiety-related symptoms with functional (dis)ability.

A search of the main national and international literature databases (Literatura Latino-Americana e do Caribe em Ciências da Saúde - LILACS, Scientific Electronic Library Online (SciELO); and Cumulative Index to Nursing and Allied Health Literature – CINAHL) revealed the availability of a greater volume of studies on other common mental disorders than for anxiety in the older population, and a dearth of evidence on anxiety disorders in this group and their implications for life and health, particularly within smaller towns in the Northeast region of Brazil77 Mangolini VI, Andrade LH, Wang YP. Epidemiology of anxiety disorders in Brazilian regions: a literature review. Rev Med. 2019;98(6):415-22. Disponível em: http://dx.doi.org/10.11606/issn.1679-9836.v98i6p415-422
https://doi.org/10.11606/issn.1679-9836....
,88 Farias WM, Santos JB, Aguiar IM, Martins KC, Maximiano-Barreto MA, Fermoseli AFO. Anxiety and depression symptoms in older adults in Primary Health Care in Maceió – AL. Rev Med. 2022;101(1):1-8. Disponível em: http://dx.doi.org/10.11606/issn.1679-9836.v101i1e-188307
https://doi.org/10.11606/issn.1679-9836....
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Therefore, the objective of the present study was to estimate the prevalence of anxiety in older people and its association with different levels of functional disability in a small town located in the state of Paraíba, Brazil.

METHOD

A cross-sectional analytical study was conducted of a representative sample of older users of 5 Primary Health Units in the urban zone of Cuité, a small town located in Western Curimataú, Paraíba state, Brazil.

The sample size was determined using the public domain software OpenEpi version 3.0. The parameters were: the universe of the older population of the urban zone of the town (N= 2,486)99 Brasil. Instituto Brasileiro de Geografia e Estatística (IBGE). Censo Demográfico 2010. Resultados gerais da amostra. Rio de Janeiro: IBGE, 2012.; mean estimated prevalence of anxiety-related disorders in the older population, P = 22.0% (0.22)1010 Machado MB, Ignácio ZM, Jornada LK, Réus GZ. Abelaira M, Arent CO, et al. Prevalence of anxiety disorders and some comorbidities in elderly: a populationbased study. J. bras. psiquiatr. 2016;65(1):28-35. Disponível em: https://doi.org/10.1590/0047-2085000000100
https://doi.org/10.1590/0047-20850000001...
; a 95% level of confidence; and a sample error of 5%, giving an estimated sample size “n” of 233 participants, allowing for 6 losses and refusals. Participants were selected randomly in a systematic proportional fashion for each Primary Health Unit. The 3 criteria for participant inclusion were: age ≥60 years; living in the catchment area of the Primary Health Units at which they were registered users; attaining the cognitive performance cut-off of 10 points on the Mini-Mental State Exam (MMSE) for the items orientation for time (date of interview) and for place (address of residence), irrespective of educational level1111 Foltein MF, Foltein SE, McHung PR. “Mini-mental state”: A practical method for grading the cognitive state of patients for the clinician. J.f Psychiatric Research. 1975; 12(3):189-98. Disponível em: https://doi.org/10.1016/0022-3956(75)90026-6
https://doi.org/10.1016/0022-3956(...
. Individuals that had communication deficits precluding data collection, or who could not be found at home after 2 visits, were excluded from the study.

The data collection process took place between April and May 2021, following study approval by the Research Ethics Committee of the University Hospital Alcides Carneiro (Permit no. 4.487.662), in compliance with the ethics and scientific precepts set forth in Resolutions 466/2012 and 510/2016 of the National Board of Health. Participant identification and recruitment entailed compiling a list of home addresses of all older users registered at each Primary Health Unit from medical records. The data collection was carried out by the lead researcher, the assistant researcher and 3 previously-trained students enrolled at the Center for Studies and Research in Aging and Quality of Life (NEPEQ) of the Federal University of Campina Grande (UFCG). In view of the COVID-19 pandemic, all health and biosafety rules prevailing in Brazil were adopted, with distancing of 1.5 meters and use of personal protective equipment by researchers.

Data were gathered using the following instruments: I) Sociodemographic questionnaire collecting information on the variables sex, skin color/race, marital status, religion, family income, living arrangement, functional literacy and occupational status; II) Geriatric Anxiety Inventory (GAI) to assess symptoms indicative of anxiety in the older population1212 Pachana NC, Burney GJ, Siddle h, Harley E, Arnold E. Development and validation of the Geriatric Anxiety Inventory. Int Psychogeriatr 2007;19(1):103-14. Disponível em: https://doi.org/10.1017/S1041610206003504
https://doi.org/10.1017/S104161020600350...
and comprising 20 dichotomous items, with scores tallied and categorized as follows: 0-10 indicates absence of anxiety; 11-15, mild/moderate anxiety; and 16-20, severe anxiety, as per its translation and transcultural adaptation in the Brazilian version1313 Martiny C, Silva ACO, Nardi AE, Pachana NA. Tradução e adaptação transcultural da versão brasileira do Inventário de Ansiedade Geriátrica (GAI). Arch Clin Psychiatry. 2011;38(1):08-12. Disponível em: https://doi.org/10.1590/S0101-60832011000100003
https://doi.org/10.1590/S0101-6083201100...
; and III) World Health Organization Disability Assessment Schedule (WHODAS 2.0) comprising a generic assessment instrument for health and disability applicable in both general population and clinical settings covering 6 life domains of functioning: Domain 1: Cognition (understanding & communicating); Domain 2: Mobility (moving & getting around); Domain 3: Self-care (hygiene, dressing, eating & staying alone); Domain 4: Getting along (interacting with other people); Domain 5: Life activities (domestic responsibilities, leisure, work & school); and Domain 6: Participation (joining in community activities). The 12-item version of the scale used in the present study yields a score of 0-48 points, where 0-1 points indicates “none”, 2-5 “mild”, 6-11 “moderate”; and ≥12 points “severe” disability1414 Ferrer MLP, Perracini MR, Rebustini F, Buchalla CM. WHODAS 2.0-BO: normative data for the assessment of disability in older adults. Rev Saúde Pública. 2019;53(19)1-11. Disponível em: https://doi.org/10.11606/S1518-8787.2019053000586
https://doi.org/10.11606/S1518-8787.2019...
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The data were analyzed and statistics expressed descriptively and in bivariate fashion as simple measures of absolute and relative frequency, with mean as the measure of central tendency. Subsequently, analysis of inferential statistics was performed to correlate the outcome variable (anxiety level) and exposure variables (sociodemographic characteristics and functioning level). For treatment of the bivariate statistic, Fisher´s Exact test was applied to determine the association between categorical variables, while the Mann-Whitney U test and Kruskal-Wallis test were used for group comparisons with the outcome variable. Non-parametric tests were used for skewed normal distribution of data, as measured by the Kolmogorov-Smirnov test. Associations were deemed statistically significant for p < 0.05.

RESULTS

Of the 233 participants, there was a predominance of individuals that were young older adults aged 60-74 years (59,7%), female (60.5%), married (54.1%), brown (56,2%), Catholic (70.4%), retired (89.7%), illiterate (57.9%), receiving a monthly income of 2-3 minimum wages (51.1%) and living with spouse only (28.3%). Comparison of total score on the GAI against groups of socioeconomic variables showed statistical significance only for the sex variable (p = 0.002), whose mean rank indicated that anxiety was more prevalent in women (mean rank = 128.11) (Table 1).

Table 1
Comparison of total score on GAI according to sociodemographic variables among older users of Primary Health Units. Cuité, Paraíba state, Brazil, 2021 (n=233).

The findings regarding the anxiety level self-reported by the participants are presented in Table 2. According to the stratified total GAI scores, 51.9% of the participants had no anxiety, 18.9% mild/moderate, and 29.2% severe anxiety. Thus, at least 48.1% of the study sample had some degree of anxiety.

Table 2
Classification of anxiety level on GAI among older users of Primary Health Units. Cuité, Paraíba state, Brazil, 2021 (n=233).

Correlating the occurrence of anxiety levels with functioning classification revealed a statistically significant association (p < 0.001) between anxiety and disability, with severe level of anxiety associated with severe level of disability (Table 3). Levels of disability reported were 9.87% (none), 33.05% (mild), 22.75% (moderate) and 34.33 (severe).

Table 3
Association between categories of anxiety and disability levels among older users of Primary Health Units. Cuité, Paraíba state, Brazil, 2021 (n=233).

DISCUSSION

The present study sought to estimate the occurrence of anxiety in older individuals and its association with different levels of functional disability in a small town located in the interior of Paraíba state. The first hypothesis was that there is a high prevalence of anxiety in older people, given the underdiagnosis of the condition, especially in the primary care setting. The second hypothesis was that there is an association among anxiety, functional disability and socioeconomic status of older people. Thus, the study findings confirmed both these hypotheses upon showing that 48.1% of participants had some degree of self-reported anxiety and that a severe level of the disorder was significantly associated with severe level of functional disability.

Anxiety can be characterized as a condition that is deleterious for the health of older individuals, reducing their quality of life and promoting a decline in health1515 Kazeminia M, Salari N, Raygani AV, Jalali R, Abdi A, Mohammadi M, et al. The effect of exercise on anxiety in the elderly worldwide: a systematic review and meta-analysis. Health Qual. Life Outcomes. 2020;18(363):1-8. Disponível em: https://doi.org/10.1186/s12955-020-01609-4
https://doi.org/10.1186/s12955-020-01609...
. Multiple conditions associated with the aging process can directly contribute to the development of the disorder. Consequently, these conditions present signs and biases for assessment of anxiety in aging, including a loss or reduction of self-esteem, limitations in activities of daily living, loss of friends and relatives, decreased physical independence, increase in chronic diseases, and lack of social support1616 Balsamo M, Cataldi F , Carlucci L , Fairfield B . Assessment of anxiety in older adults: a review of self-report measures. Clin Interv Aging. 2018;13(1)573–93. Disponível em: https://doi.org/10.2147/CIA.S114100
https://doi.org/10.2147/CIA.S114100...
. The prevalence of anxiety in this age group can vary by as much as 52%, with rates gradually increasing with age1010 Machado MB, Ignácio ZM, Jornada LK, Réus GZ. Abelaira M, Arent CO, et al. Prevalence of anxiety disorders and some comorbidities in elderly: a populationbased study. J. bras. psiquiatr. 2016;65(1):28-35. Disponível em: https://doi.org/10.1590/0047-2085000000100
https://doi.org/10.1590/0047-20850000001...
,1515 Kazeminia M, Salari N, Raygani AV, Jalali R, Abdi A, Mohammadi M, et al. The effect of exercise on anxiety in the elderly worldwide: a systematic review and meta-analysis. Health Qual. Life Outcomes. 2020;18(363):1-8. Disponível em: https://doi.org/10.1186/s12955-020-01609-4
https://doi.org/10.1186/s12955-020-01609...
.

Despite the high prevalence widely reported in the scientific literature, obstacles to the diagnosis and screening of anxiety in the older population remain. Effective detection of anxiety disorders in older individuals is hampered by its pathological aspects that are easily confounded with natural conditions of biopsychosocial aging, common emotional disorder, cognitive decline, or comorbidities induced by the aging process. Thus, when symptoms are not differentiated, the assessment, diagnostic conclusion and therapeutic management of this condition are neglected1616 Balsamo M, Cataldi F , Carlucci L , Fairfield B . Assessment of anxiety in older adults: a review of self-report measures. Clin Interv Aging. 2018;13(1)573–93. Disponível em: https://doi.org/10.2147/CIA.S114100
https://doi.org/10.2147/CIA.S114100...
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Neglect by the individual has also been reported in the scientific literature in health care. A study of older people in 5 general practices in the United Kingdom showed that those with higher levels of severity of anxiety normalized their symptoms as part of their health issues and functional difficulties associated with late life. These individuals also proved reluctant to seek health services, further hampering their diagnosis and treatment1717 Frost R, Nair P, Aw S, Gould RL, Kraricha K, Buszewicz M. Supporting frail older people with depression and anxiety: aqualitative study. Aging Ment Health. 2019;24(12):1977-84. Disponível em: https://doi.org/10.1080/13607863.2019.1647132
https://doi.org/10.1080/13607863.2019.16...
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In the present investigation, the assessment of level of severity found that 29.2% of participants had severe anxiety, exceeding the 16.28% rate reported by a study conducted in Maceió, Brazil1818 Barreto MAM, Aguiar IM, Martins KC, Buarque DC, Fermoseli AFO. Ansiedade e depressão e a relação com a desigualdade social entre idosos. Psicol. saúde e doenças. 2019;20(1):209-19. Disponível em: http://dx.doi.org/10.15309/19psd200117
https://doi.org/10.15309/19psd200117...
. Consistent with the data cited, symptoms such as restlessness, muscle tension, poor concentration and sleep disturbances, commonly associated with the more severe clinical form of anxiety, greatly increase the risk of limitations in physical functioning, social participation, and in activities of daily living of older people. These symptoms are regarded as independent risk factors for the onset of disabilities in this age group22 Dong L, Freedman VA, Mendes LCF. The association of comorbid depression and anxiety symptoms with disability onset in older adults. Psychosom Med. 2021;82(2):158–64. Disponível em: https://doi.org/10.1097/PSY.0000000000000763.
https://doi.org/10.1097/PSY.000000000000...
.

Numerous conditions can lead to the high prevalence of severe anxiety in the older population, principally related to factors such as increased burden of diseases and hospitalizations, low level of physical work, substance use (e.g. alcohol or tobacco), late diagnosis of anxious disorder, or poor therapeutic treatment55 Date CVDV, Gulpers B, Zelst WV, Kohler S, Comijs HC, Shoevers RA, et al. Anxiety in Late-Life Depression: Determinants of the Course of Anxiety and Complete Remission. Am J Geriatr Psiquiatria.2021;29(4):336-47. Disponível em: http://dx.doi.org/10.1016/j.jagp.2020.12.023
https://doi.org/10.1016/j.jagp.2020.12.0...
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It is important to mention the epidemiological scenario in which study participants were assessed, amid the pandemic caused by COVID-19. The evidence shows that the COVID-19 pandemic, and resultant physical distancing, can act as potential stressors for the development and exacerbation of psychoemotional issues in older people, whereby factors such as loneliness due to lockdowns, fear of catching the disease, prevention of saying goodbye to those who died, economic strain and uncertainty over future, led to an increase in anxiety symptoms of up to 20% in this population1919 Brooks KS, Webster RK, Smith LE, Woodland L, Wessely S, Greenberg N. The psychological impact of, quarantine and how to reduce it: rapid review of the evidence. The Lancet. 2020;395(1):912-20. Disponível em: https://doi.org/10.1016/S0140-6736(20)30460-8
https://doi.org/10.1016/S0140-6736(...
,2020 Tundo A, Betro S, Necci B. What Is the Impact of COVID-19 Pandemic on Patients with Pre-Existing Mood or Anxiety Disorder? An Observational Prospective Study. Medicina (Kaunas). 2021;57(4):304. Disponível em: https://doi.org/10.3390/medicina57040304
https://doi.org/10.3390/medicina57040304...
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When examined in terms of gender, geriatric anxiety was more prevalent and severe in women than in men. This finding corroborates the results of a multi-center study conducted in Germany, Italy, the United Kingdom, Spain and Israel showing that women had significantly higher levels of anxiety, being 3 times more likely to develop an anxiety disorder2121 Canuto A, Weber K, Baertschi M, Wittchen HU, Schulz H, Harter M. Anxiety disorders in Old Age: Psychiatric Comorbidities, Quality of Life, and Prevalence According to Age, Gender, and Country. Am J Geriatr Psychiatry. 2017;26(2):174-85. Disponível em: http://dx.doi.org/doi: 10.1016/j.jagp.2017.08.015.
https://doi.org/doi: 10.1016/j.jagp.2017...
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Overall, the literature reports a higher prevalence of health issues and psychoemotional disorders in females2222 Kimberly D, Gregory MD, David Chelmow, MD; Heidi DN, Niel MSD, Conry JÁ, et. al. Screening for Anxiety in Adolescent and Adult Women: A Recommendation From the Women's Preventive Services Initiative. Clinical Guirdiline. 2020;173(1):45-58. Disponível em: https://doi.org/10.7326/M20-0580.
https://doi.org/10.7326/M20-0580...
. This gender difference might be explained by factors historically associated with females, who had lower access to education, fewer formal work opportunities, lower levels of income, greater social pressure and household burden, contributing to less protection, security and well-being in late life2121 Canuto A, Weber K, Baertschi M, Wittchen HU, Schulz H, Harter M. Anxiety disorders in Old Age: Psychiatric Comorbidities, Quality of Life, and Prevalence According to Age, Gender, and Country. Am J Geriatr Psychiatry. 2017;26(2):174-85. Disponível em: http://dx.doi.org/doi: 10.1016/j.jagp.2017.08.015.
https://doi.org/doi: 10.1016/j.jagp.2017...
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Moreover, symptoms indicative of anxiety in older women may manifest as symptoms associated with underlying problems in their lives, including hormone syndromes, post-traumatic stress disorder, sexual aggression, domestic violence or other adverse experiences, commonly related to gender and older age group2222 Kimberly D, Gregory MD, David Chelmow, MD; Heidi DN, Niel MSD, Conry JÁ, et. al. Screening for Anxiety in Adolescent and Adult Women: A Recommendation From the Women's Preventive Services Initiative. Clinical Guirdiline. 2020;173(1):45-58. Disponível em: https://doi.org/10.7326/M20-0580.
https://doi.org/10.7326/M20-0580...
. This strata of the population should, therefore, receive special care and attention from professionals and be extensively evaluated and treated at the different levels of the healthcare network.

Consistent with the results reported, the aging process, together with the myriad of physiological and pathological changes experienced by the older population across the life span, culminate in a growing level of dependence, functional impairment and declines in physical, cognitive and psychological capacity, directly influencing the development of common mental disorders such as anxiety2323 Edlund MJ, Wuang J, Brown KG, Hoffman VF, Calvin SL, Hedden Sl, et al. Which mental disorders are associated with the greatest impairment in functioning?. Soc Psychiatry Psychiatr Epidemiol. Epidemiology.2018; 53(11):1265-76. Disponível em: https://doi.org/10.1007/s00127-018-1554-6.
https://doi.org/10.1007/s00127-018-1554-...
,2424 Grassi L, Caruso R, Ronch C, Härter M, Schulz H, Volkert J, et al. Quality of life, level of functioning, and its relationship with mental and physical disorders in the elderly: results from the MentDis_ICF65+ study. Health Qual Life Outcomes. 2020;18(61)1-12. Disponível em: https://doi.org/10.1186/s12955-020-01310-6.
https://doi.org/10.1186/s12955-020-01310...
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Furthermore, this implies that anxiety acts as a driver of frailty and vulnerability in the older population, and can be regarded as a strong determinant for increased level of disability in late life11 Zhao W, Zhang Y, Liu X, Yue J, Hou L, Xia X, et al. Comorbid depressive and anxiety symptoms and frailty among older adults: Findings from the West China health and aging trend study. J. Affect. Disord. 2020; 277:970-6. Disponível em: https://doi.org/10.1016/j.jad.2020.08.070.
https://doi.org/10.1016/j.jad.2020.08.07...
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In this respect, the study results confirm the association between level of self-reported anxiety and level of disability among the older adults assessed, where severe level of anxiety was associated with severe level of disability. These findings corroborate a study performed in a small town located in the interior of the Brazilian state of Bahia, in which older people with anxiety or depression had a higher prevalence of impairment in carrying out activities of daily living, greater clinical-functional vulnerability, low social engagement and greater disability processes2525 Possato JM, Rabelo DF. Condições de saúde psicológica, capacidade funcional e suporte social de idosos. Revista Kairós. 2017;20(2):45-58. Disponível em: https://doi.org/10.23925/2176-901X.2017v20i2p45-58
https://doi.org/10.23925/2176-901X.2017v...
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The presence of functional deficits or disabilities are often reported in studies investigating geriatric anxiety, characterized as a form of symptom or consequence of the impairments secondary to the disorder1515 Kazeminia M, Salari N, Raygani AV, Jalali R, Abdi A, Mohammadi M, et al. The effect of exercise on anxiety in the elderly worldwide: a systematic review and meta-analysis. Health Qual. Life Outcomes. 2020;18(363):1-8. Disponível em: https://doi.org/10.1186/s12955-020-01609-4
https://doi.org/10.1186/s12955-020-01609...
. The authors emphasize that anxiety-related changes contribute to lower social participation, impaired autonomy and a worsening of limitations for performing activities of daily living, factors which may debilitate older individuals in everyday life2222 Kimberly D, Gregory MD, David Chelmow, MD; Heidi DN, Niel MSD, Conry JÁ, et. al. Screening for Anxiety in Adolescent and Adult Women: A Recommendation From the Women's Preventive Services Initiative. Clinical Guirdiline. 2020;173(1):45-58. Disponível em: https://doi.org/10.7326/M20-0580.
https://doi.org/10.7326/M20-0580...
. In addition, symptoms of the disorder can interact with other pre-existing diseases, exacerbating cognitive and functional deficits that accompany the aging process, becoming more severe and debilitating over time22 Dong L, Freedman VA, Mendes LCF. The association of comorbid depression and anxiety symptoms with disability onset in older adults. Psychosom Med. 2021;82(2):158–64. Disponível em: https://doi.org/10.1097/PSY.0000000000000763.
https://doi.org/10.1097/PSY.000000000000...
.

Another factor impacting level of disability in older individuals with anxiety is the increase or onset of comorbidities resulting from the disorder2424 Grassi L, Caruso R, Ronch C, Härter M, Schulz H, Volkert J, et al. Quality of life, level of functioning, and its relationship with mental and physical disorders in the elderly: results from the MentDis_ICF65+ study. Health Qual Life Outcomes. 2020;18(61)1-12. Disponível em: https://doi.org/10.1186/s12955-020-01310-6.
https://doi.org/10.1186/s12955-020-01310...
. The literature shows that anxious older patients are more predisposed to physical disturbances, including visual deficits, falls, hypertension, gastrointestinal problems, besides cardiovascular changes, factors which may contribute to increased levels of disability and vulnerability. Moreover, older people with anxiety tend to have inadequate treatment and impaired self-care, factors which further impact the functioning and quality of life of this group2626 Lopes BFF, Oliveira TR, Lira KAS, Santos GL, Brandão GS. Depression, anxiety and quality of life in elderly participants of an open university for senior citizens. Rev. Enferm. Atual In Derme. 2021;95(35):1-12. Disponivel em: https://doi.org/10.31011/reaid-2021-v.95-n.35-art.1172
https://doi.org/10.31011/reaid-2021-v.95...
..

Although no statistically significant association was found between age group and total GAI score in the present study, severe anxiety appears to be a precursor of cognitive decline and of severe disability in older adults2727 Santabárbara J, Lipnick DM, Olaya B, Villagrasa B, Notivol JB, Nuez L, et al. Does Anxiety Increase the Risk of all-Cause Dementia? An Updated Meta-Analysis of Prospective Cohort Studies. J Clin Med. 2020;9(6):1791. Disponível em: https://doi.org/10.3390/jcm906179.
https://doi.org/10.3390/jcm906179...
. This relationship can be explained by the neurobiological changes promoted by the disorder, compounded by long-term use of benzodiazepines for treatment of the condition, which can render patients more susceptible to developing neurodegenerative conditions such as Alzheimer´s disease or vascular dementia. Early evidence of these risk factors has been reported by other meta-analyses performed in the last 5 years2828 Li X, Li Z. The impact of anxiety on the progression of mild cognitive impairment to dementia in Chinese and English data bases: a systematic review and meta-analysis. Int J Geriatr Psychiatry. 2017;33(1):131-40. Disponível em: https://doi.org/10.1002/gps.4694.
https://doi.org/10.1002/gps.4694...

29 Becker E, Rios CLO, Lahmann C, Rucker G, Buer Jm Boeker M. Anxiety as a risk factor of Alzheimer's disease and vascular dementia. Br J Psychiatry. 2018;213(5):654-60. Disponível em: https://doi.org/10.1192/bjp.2018.173.
https://doi.org/10.1192/bjp.2018.173...
-3030 He Q, Chen X, Wu T, Li L, Fei X. Risk of Dementia in Long-Term Benzodiazepine Users: Evidence from a Meta-Analysis of Observational Studies. J Clin Neurol. 2019;15(1):9-19. Disponível em: https://doi.org/10.3988/jcn.2019.15.1.9.
https://doi.org/10.3988/jcn.2019.15.1.9...
.

It is also noteworthy that anxiety disorders are associated with avoidance behaviors which, in turn, can result in a higher degree of social isolation and substantially lower levels of physical activity, both representing risk factors for the development of disability conditions in this age group2727 Santabárbara J, Lipnick DM, Olaya B, Villagrasa B, Notivol JB, Nuez L, et al. Does Anxiety Increase the Risk of all-Cause Dementia? An Updated Meta-Analysis of Prospective Cohort Studies. J Clin Med. 2020;9(6):1791. Disponível em: https://doi.org/10.3390/jcm906179.
https://doi.org/10.3390/jcm906179...
.

However, it should be pointed out that, although some authors hold there is complex interaction between anxiety and clinical-functional decline among older individuals, the cause-effect relationship has not yet been fully elucidated. Thus, both emotional disorders and pathological anxiety may be consequences of physical diseases and, conversely, chronic anxiety may lead to a decline in health and increase in morbimortality, resulting in a greater degree of disability3131 Wetzel FD, Stein J, Rohr S, Fuchs A, Pentzek M, Mosch E. Prevalence of Anxiety Symptoms and Their Association With Loss Experience in a Large Cohort Sample of the Oldest-Old. Results of the AgeCoDe/AgeQualiDe Study. Front Psychiatry. 2019;8(10):285. Disponível em: https://doi.org/10.3389/fpsyt.2019.00285.
https://doi.org/10.3389/fpsyt.2019.00285...
.

The present study has some limitations which should be taken into account when interpreting the results, including its cross-sectional design which, besides precluding any conclusions regarding cause and effect relationships between variables, introduces the risk of reverse causality bias among the outcomes and exposure elements. Another noteworthy point is the scarcity of national output on the topic. Perhaps, owing to the underdiagnosis of the disorder, there is consequent under-reporting of data in the national literature. This lack of previous reports hampers meaningful comparisons against the results of the present study that encompass the diverse range of cultural, social and demographic aspects in Brazil.

Notwithstanding the limitations outlined, a major strength of the study lies in the relevance of the topic amid a dearth of studies addressing this issue in the national literature. Lastly, the results found can help inform public policy-making and enhance the multiprofessional care delivered to the older population, aiding screening, identification, diagnosis and early therapeutic management of geriatric anxiety.

CONCLUSION

Valuable evidence was found confirming the relationship between sociodemographic profile, levels of geriatric anxiety and different degrees of functional disability of the older adults assessed. Overall, 48.1% of the sample were shown to have some level of geriatric anxiety, with greater severity identified among women. Comparison of performance on the WHODAS and the GAI revealed a significant association between severe level of disability and severe level of anxiety.

Taken together, these results indicate the need for planning and implementation of specialized interventions in the field of geriatrics and gerontology, along with the devising of public policies that incorporate the practice of routine assessment of biopsychosocial aspects concerning the health of older people, given that both anxiety and disability are largely preventable conditions.

The negative impacts of anxiety and disability can be attenuated by screening and early detection, allowing effective individualized care, a reduction in complications and promotion in the quality of life of the older population. To this end, primary care professionals should be trained so as to develop their competencies and skills in the identification, management and proper treatment planning for these health conditions, besides broadening the scope of actions addressing psychoemotional and motor dimensions, with subsequent referral to specialist services when necessary.

Finally, further trials exploring the complexity of the relationship between geriatric anxiety and clinical-functional disability are warranted to maximize the empirical contribution of studies in this area and support the underpinnings, integrality and longitudinality of health care for the older population.

  • No funding was received in relation to the present study.

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Edited by

Edited by: Maria Luiza Diniz de Sousa Lopes

Publication Dates

  • Publication in this collection
    21 Aug 2023
  • Date of issue
    2023

History

  • Received
    24 Mar 2023
  • Accepted
    20 June 2023
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