Knowledge of and attitudes toward the WHO MPOWER policies to reduce tobacco use at the population level: a comparison between third-year and sixth-year medical students

ABSTRACT

Objective:

To evaluate third- and sixth-year medical students in Brazil in terms of their knowledge of and attitudes toward the WHO MPOWER policies to reduce tobacco use.

Methods:

The WHO Global Health Professions Student Survey was applied in five cohorts of medical students evaluated in their third and sixth years of medical school, between 2008 and 2015. Comparisons were drawn between the two years of medical school in terms of the proportions of students who experimented with or used tobacco products in the last 30 days prior to the survey; knowledge of and compliance with smoke-free policies on the university campus; formal training on smoking cessation strategies; and self-recognition as role models for patients/society.

Results:

Of the 943 students who completed the survey, approximately 6% had smoked cigarettes in the last 30 days prior to the survey. Comparing the third and sixth years of medical school, we observed a significant increase in the proportion of students who were knowledgeable about smoking cessation strategies (22.74% vs. 95.84%; p < 0.001) and in that of those who recognized their role as models for patients/society (84.5% vs. 89.7%; p = 0.023). Student knowledge of the smoking policies on the university campus was associated with an increase in self-recognition as role models (adjusted absolute difference = 6.7%; adjusted p = 0.050).

Conclusions:

Knowledge of smoking cessation strategies and self-recognition as role models for patients/society increase over the course of medical school and are associated with the implementation of smoke-free policies.

Keywords:
World Health Organization; Education, public health professional; Students, medical; Tobacco; Capacity building; Health behavior

RESUMO

Objetivo:

Avaliar estudantes de medicina do terceiro e sexto anos no Brasil em relação a seu conhecimento e atitudes sobre as políticas MPOWER da OMS para redução do uso do tabaco.

Métodos:

A Pesquisa Global de Estudantes de Profissões da Saúde da OMS foi aplicada em cinco coortes de estudantes de medicina avaliados no terceiro e sexto anos da graduação, entre 2008 e 2015. Foram feitas comparações entre os dois anos da graduação em relação às proporções de estudantes que experimentaram ou fizeram uso de produtos de tabaco nos últimos 30 dias antes da pesquisa; conhecimento e cumprimento das políticas antifumo no campus universitário; treinamento formal sobre estratégias de cessação do tabagismo; e autorreconhecimento como modelo de comportamento para pacientes/sociedade.

Resultados:

Dos 943 estudantes que preencheram a pesquisa, aproximadamente 6% haviam fumado cigarro nos últimos 30 dias antes da pesquisa. Ao compararmos o terceiro e sexto anos da graduação, observamos um aumento significativo na proporção de estudantes que tinham conhecimento sobre estratégias de cessação do tabagismo (22,74% vs. 95,84%; p < 0,001) e na daqueles que reconheciam seu papel como modelo para pacientes/sociedade (84,5% vs. 89,7%; p = 0,023). O conhecimento dos estudantes sobre as políticas de tabagismo existentes no campus universitário associou-se ao aumento no autorreconhecimento como modelo de comportamento (diferença absoluta ajustada = 6,7%; p ajustado = 0,050).

Conclusões:

O conhecimento sobre estratégias de cessação do tabagismo e a autorreconhecimento como modelo de comportamento para pacientes/sociedade aumentaram ao longo da graduação e estão associados à implementação de políticas antifumo.

Descritores:
Organização Mundial da Saúde; Educação profissional em saúde pública; Estudantes de medicina; Tabaco; Fortalecimento institucional; Comportamentos relacionados com a saúde

INTRODUCTION

Every year, tobacco use kills more than 8 million people worldwide.¹ In 2008, the WHO Framework Convention on Tobacco Control drafted six key policies to reduce demand for tobacco products. These measures are known as MPOWER, an acronym for the following recommendations: Monitor tobacco use and prevention policies; Protect people from tobacco smoke; Offer help to quit; Warn about the dangers of tobacco; Enforce bans on tobacco advertising, promotion, and sponsorship; and Raise taxes on tobacco.²

The seventh WHO Report on the Global Tobacco Epidemic,³ launched in Brazil in July of 2019, was a milestone for tobacco control policies in the country. On that occasion, Brazil was recognized as the second country in the world to implement, at the highest level, all of the measures contained in the MPOWER package.

Most smokers want to quit, and the chance of cessation increases with health professionals offering help to quit tobacco use (behavioral and/or pharmacological approach). Offering help to quit smoking is a cost-effective population-based intervention.^3,4 The WHO report emphasized the need to expand the Offer policy, by making more smoking cessation facilities available as an essential component of any tobacco control strategy.³ Moreover, the WHO report highlighted that when offering help to quit smoking comes together with other tobacco control strategies, such as tax raises and smoking bans, that policy has a greater impact.³

In order to continue expanding the smoking treatment network, apart from increasing the availability of pharmacological therapy, ongoing attention to the formal training of future health professionals on smoking cessation approaches is necessary.^5-7 In this sense, we assume that if medical students are aware of the benefits of smoking cessation, they will be more likely to avoid smoking themselves and will act as role models for their patients.⁸

The present study aimed to evaluate medical students in Brazil in terms of their knowledge of and attitudes toward the WHO MPOWER policies to reduce tobacco use in the population, over the course of medical school. Therefore, third- and sixth-year medical students completed the WHO Global Health Professions Student Survey (GHPSS).⁹

METHODS

This was a prospective cohort study conducted among undergraduate third- and sixth-year medical students at the University of São Paulo School of Medicine, located in the city of São Paulo, Brazil. Information about the objectives of the current study was provided in the classroom by the authors responsible for the study. Students signed an informed consent form and then completed the WHO GHPSS.⁹ The survey has been translated into Portuguese and validated for use in Brazil.^10,11

Third-year medical students completed the survey in June of 2008-2012. Those third-year medical students, when they were in their sixth year of medical school (i.e., between 2011 and 2015), were invited to complete the same survey again, which created five student cohorts to be followed. In addition, we collected the answers of the sixth-year students who were not in the classroom in their third year of medical school when the survey had been applied in the previous years. It is important to mention that, of a total of 175 third-year students enrolled in the medical school annually between 2008 and 2012 (N = 875), 556 (63.5%) completed the survey. Of the sixth-year medical students, 110, 61, 82, 66, and 68 completed the survey in 2011, 2012, 2013, 2014, and 2015, respectively, totaling 387 (44.2%) of the total number of enrolled students (N = 875). Moreover, 203 (36.5%) of the third-year students were successfully followed up over the study period.

For descriptive statistical analysis, we selected the following variables related to the current and future implementation of the MPOWER policies at the university-Monitor: prevalence of cigarette use, proportion of experimentation with other forms of tobacco (chewing tobacco, snuff, bidis, cigars, or pipes), and proportion of experimentation with water pipes¹²; Protect: protecting people from tobacco smoke was analyzed by the dichotomous variable related to the perception of the enforcement of smoking ban in the university (“Does your school have an official smoking ban policy in school buildings and clinics?” and “Is your school’s official smoking ban in school buildings and clinics enforced?”); Offer: students who reported having received formal training on smoking cessation strategies (“Have you received any formal training to address the issue of smoking cessation with patients at the medical school?”); and self-recognition as role models for patients/society (“Do you recognize yourself as a role model for your patients and the population?”).^13,14

For all descriptive statistical analyses, the chi-square test was used in order to compare the corresponding proportions between medical school years among all third- and sixth-year medical students who completed the survey. We also considered a secondary analytical sample for descriptive analyses that consisted of students who were successfully followed up over time (36.5% of the third-year students) in order to control for unmeasured characteristics that might otherwise confound the results. Moreover, among the students who were not lost to follow-up, in order to assess a possible mechanism to explain the relationship between school year and student perception of their role as models for patients/society (Figure 1), the differences in the proportion between third- and six-year medical students who answered “yes” to the question “Do you recognize yourself as a role model for your patients and the population?” were simultaneously adjusted for demographic and socioenvironmental variables. Because the response variable was dichotomous (i.e., yes or no), and given the public health implications of our study, crude absolute differences in the proportions were obtained from a generalized linear model using the binomial family and Gaussian link function.^15,16 Overall differences by medical school year in the proportions of the “role model” variable were simultaneously adjusted for age, smoking status, and the “smoking ban” variable (model A); then, we also added to the model the selected question about the curriculum “Have you received any formal training on how to approach smokers?” (model B); and, finally, we also considered a sensitivity analysis that included the entire baseline sample (third-year students), that is, students who were and were not lost to follow-up.

Figure 1
Schematic representation of the mechanisms to explain the relationship between school year and the research questions of interest.

All analyses were performed with the Stata statistical software package, version 15.0 (StataCorp LP, College Station, TX, USA), and the study was approved by the research ethics committee of the institution (CAPPesq no. 0277/08).

RESULTS

Table 1 shows that there was a higher proportion of males who completed the survey among third-year medical students than among sixth-year students, although that difference was not statistically significant. The mean age of third- and sixth-year medical students was 22.2 years and 24.6 years, respectively. A low proportion of cigarette consumption and a high proportion of experimentation with water pipes were found in both groups.

Table 1
Demographic data, smoking status, and selected answers to the WHO Global Health Professions Student Survey of third-year medical students (2008-2012) and sixth-year medical students (2011-2015). University of São Paulo School of Medicine, Brazil.^a

Variable	School year				p	Adjusted p*
	Third		Sixth
	N = 556		N = 387
Male	321	(57.7)	213	(55.5)	0.49	N/A
Tobacco use (Monitor)b
Cigarette smoking	30	(5.4)	26	(6.7)	0.40	0.57
Experimentation with other forms of tobaccoc	117	(21.0)	92	(23.8)	0.35	0.94
Experimentation with water pipe	241	(43.3)	168	(43.8)	0.83	0.90
University/curriculum (Offer)b
Received any formal training on smoking cessation approaches	126	(22.7)	369	(95.8)	< 0.001	N/A
University/passive smoking (Protect)b
Smoking ban in school buildings and clinics is enforced	326	(59.3)	265	(69.0)	< 0.002	N/A
Health professionals/attitude (Offer)b
Recognize yourself as a role model for patients and the general population	464	(84.5)	347	(89.7)	0.023	N/A

• ^a
  Values expressed as n (%). ^bIn accordance with WHO MPOWER policies. ^cExcept water pipe. *The overall difference by school year in the prevalence of smoking (or tobacco use) was simultaneously adjusted for age and sex.

We found a statistically significant increase in the proportion of medical students who reported having received formal training on smoking cessation approaches (22.7% in the third-year group vs. 95.8% in the sixth-year group), as well as in the perception of compliance with the environmental tobacco smoke control policy inside university buildings/hospitals (59.3% vs. 69.0%). Detailed information on the proportion of students who stated that the smoking ban in school buildings and clinics is enforced can be found in the supplementary material.

The proportion of affirmative answers to the question regarding self-recognition as role models for patients/society was high in both groups, being higher in the sixth-year-student group (89.7% vs. 84.5%). Additional descriptive analyses, such as the prevalence of use of and experimentation with other forms of tobacco (stratified by sex), as well as the attitudes toward, beliefs about, and knowledge of such products, can be found in the supplementary material.

Table 2 shows that the proportion of males, the proportion of experimentation with water pipes, and the mean age of third-year medical students who were lost to follow-up were significantly higher than were those observed among students who were successfully followed-up. However, both subgroups showed similar proportions of smokers and answered similarly the questions regarding formal training, perception of smoking ban, and self-recognition as role models. Moreover, comparisons regarding demographic data, smoking status, and selected answers to the WHO GHPSS between third- and sixth-year medical students who were successfully followed up revealed similar results to those found for the overall sample of third- and sixth-year medical students who completed the survey (Table 1).

Table 2
Demographic data, smoking status, and selected answers to the WHO Global Health Professions Student Survey of third-year medical students (lost and not lost to follow-up subgroups) and sixth-year medical students (not lost to follow-up). University of São Paulo School of Medicine, Brazil.^a

Variable	School year
	Third (2008-2012)c,d		Sixth (2011-2015)d
	Lost to follow-up	Not lost to follow-up	Not lost to follow-up
	n = 353	n = 203	n = 203
Demographic
Male	62.0%	50.3%	50.3%
Mean age, years	22.5	21.8	24.5
Tobacco use (Monitor)a
Cigarette smoking	5.7%	4.9%	5.9%
Experimentation with other forms of tobaccob	23.1%	18.0%	17.3%
Experimentation with water pipe	49.7%	33.3%	33.7%
University/curriculum (Offer)a
Received any formal training on smoking cessation approaches	24.4%	19.8%	95.1%
University/passive smoking (Protect)a
Smoking ban in school buildings and clinics is enforced	61.3%	55.7%	63.4%
Health professionals/attitude (Offer)a
Recognize yourself as a role model for patients and the general population	84.7%	84.2%	91.1%

• ^a
  In accordance with WHO MPOWER policies. ^bExcept water pipe. ^cStatistically significant differences between the subgroups are indicated as follows: male (p = 0.007); age (p = 0.009); and water pipe experimentation (p < 0.001; p adjusted for sex and age = 0.15), ^dStatistically significant differences between school years among students who were not lost to follow-up are indicated as follows: age (p < 0.001); Offer policy (p < 0.001); and role model (p = 0.033).

Table 3 shows that there was an increase in student perception of being role models (regarding smoking) for patients/society from the third to the sixth year of medical school (crude absolute difference = +6.9%), although that increase was not found when the statistical model was adjusted for other demographic and socioenvironmental variables. Model B suggests that the effect of the school year was primarily mediated by having received formal training on smoking cessation strategies (crude absolute difference = +6.4%). The variable “having knowledge of the compliance with the smoking ban policy on the university campus” was also associated with an increase (crude and adjusted absolute difference) in student perception of being role models for patients and the general population.

Table 3
Crude and adjusted absolute differences in student self-recognition as role models for patients/society among medical students who were successfully followed up, by school year, demographic variable, and socioenvironmental variable.

Variable	CADa		Model Ab		Model Bc
			AADa		AADa
	%	p	%	p	%	p
School year
Third	Ref		Ref
Sixth	6.9	0.03	6.3	0.09	1.9	0.70
Sex
Female	Ref		−	−	−	-
Male	−3.0	0.34	−	−	−	-
Age, years	0.9	0.10	−0.1	0.89	−0.1	0.87
Smoking status
Nonsmoker	Ref		Ref		Ref
Smoker	−11.0	0.23	−11.7	0.18	−11.5	0.19
Received any formal training on smoking cessation approaches
No	Ref		−	−	Ref
Yes	7.9	0.02	−	−	+6.4	0.14
Smoking ban in school buildings and clinics is enforced
No	Ref		Ref		Ref
Yes	7.9	0.02	6.6	0.05	6.7	0.05

• CAD: crude absolute difference; and AAD: adjusted absolute difference. ^aGeneralized linear model using the binomial family and Gaussian link function. The regression coefficient was the absolute difference in proportions. ^bThe overall difference by school year in the proportion of affirmative answers to the question about self-recognition as role models was simultaneously adjusted for age, smoking status, cohort of students, and smoking ban. ^cThe overall difference in the proportion of affirmative answers to the question about self-recognition as role models was simultaneously adjusted for age, smoking status, cohort of students, smoking ban, and the question about receiving any formal training on smoking cessation approaches.

We included the entire sample of third-year medical students in the sensitivity analysis (Table 4), and the main conclusions based on Table 3 remained unaltered.

Table 4
Crude and adjusted absolute differences in student self-recognition as role models for patients/society among the overall sample of medical students, by school year, demographic variable, and socioenvironmental variable .

Variable	CADa		Model Ab		Model Bc
			AADa		AADa
	%	p	%	p	%	p
School year
Third	Ref		Ref
Sixth	6.6	0.009	7.1	0.010	1.6	0.62
Sex
Female	Ref		-	-	-	-
Male	−2.2	0.39	-	-	-	-
Age, years	0.3	0.099	−0.2	0.69	−0.2	0.79
Smoking status
Nonsmoker	Ref		Ref		Ref
Smoker	−8.2	0.21	−8.2	0.19	−8.4	0.18
Received any formal training on smoking cessation approaches
No	Ref		-	-	Ref
Yes	5.8	0.049	-	-	6.1	0.075
Smoking ban in school buildings and clinics is enforced
No	Ref		Ref		Ref
Yes	6.8	0.011	5.9	0.026	6.0	0.029

• CAD: crude absolute difference; and AAD: adjusted absolute difference. ^aGeneralized linear model using the binomial family and Gaussian link function. The regression coefficient was the absolute difference in proportions. ^bThe overall difference in the proportion of affirmative answers to the question about self-recognition as role models was simultaneously adjusted for age, smoking status, cohort of students, and smoking ban. ^cThe overall difference in the proportion of affirmative answers to the question about self-recognition as role models was simultaneously adjusted for age, smoking status, cohort of students, smoking ban, and the question about receiving any formal training on smoking cessation approaches.

DISCUSSION

From 2008 to 2015, the present study monitored third- and sixth-year medical students at the University of São Paulo School of Medicine on various issues related to smoking, and it revealed that the academic/university environment had a positive and transforming impact on those students.

Sixth-year medical students reported a significant increase in their knowledge of the approach to smoking treatment and in their perception of their role as behavioral models for patients/society, when compared with third-year students (MPOWER Offer strategy).

Formal training on smoking cessation approaches probably had an impact on the increase in self-efficacy and expanded the repertoire of the students on topics related to smoking cessation to be used with smokers in the future (MPOWER Offer strategy). A study involving medical students from Finland revealed that the lack of ability to address smokers appropriately during a clinical consultation stems from the lack of specific training.¹³ Moreover, a study conducted in Iraq found that physicians who were smokers and reported having received formal training on smoking cessation during their university education recognized that they could have a more positive impact on the population if they quit smoking.¹⁴ Formal education obtained during the years of medical training is, therefore, essential for the transformation and development of the student into a medical role model, insofar as the vision of his/her role in society expands.¹⁷ Another important point is that the concept that students have of themselves evolves as they come into contact with patients and accumulate more knowledge, feel more confident, and have a greater professional identity.^18,19

Article 14 of the WHO Framework Convention on Tobacco Control²⁰ strengthens the importance of reducing the number of current tobacco users through teaching about the treatment of tobacco dependence. One of WHO’s global monitoring frameworks for the noncommunicable disease action plan is to reduce tobacco use. To achieve that goal, medical schools will therefore have to do their part in teaching about tobacco control in order to help smokers to quit.^20,21

At present, smoking cessation treatment involves both behavioral/cognitive counseling (brief or intensive, individual or in group) and pharmacotherapy, and its costs are fully covered to all smokers by the Brazilian Unified Health Care System in primary care facilities or hospitals. In 2019, after a long and arduous process, the National Health Insurance Agency of the Brazilian National Ministry of Health finally approved the inclusion of smoking cessation treatment in private health insurance coverage, benefiting 47 million privately insured people (22% of the total population in Brazil).^22-24

To the best of our knowledge, this is the first study that evaluated the association between the GHPSS and medical students’ self-recognition of their importance as future physicians who will offer their patients help to quit tobacco use and will serve as role models for their patients/society. The reasons for their self-recognition as role models can be a result of a transition process during their medical training, determined not only by formal education methodology but also by socioenvironmental components, such as the smoke-free environment law that came into force in the state of São Paulo in 2009 (MPOWER Protect policy).¹² In fact, the 2019 Report on the Global Tobacco Epidemic³ emphasizes that when the help to quit smoking comes together with other tobacco control strategies, there is a greater impact.

Our analysis showed that the perception of enforcement of the smoking ban inside the campus (MPOWER Protect policy) also influenced student self-recognition as a model of behavior for patients and the population, regardless of the school year. It is worth mentioning that, in 2009, ninety days prior to the enactment of the Anti-smoking Law¹² that created smoke-free environments and banned the use of any smoking product, derived or not from tobacco, in all public and private enclosed places, the most varied types of communication outlets massively disseminated information about the contents of the law and the necessary changes that should take place.

According to Bandura,²⁵ the observational paradigm of the process of awareness of becoming a role model is composed of attention, retention, reproduction, and motivation, which in turn is influenced by the behavior, the individual, and the environment. The vast majority of the citizens in the state of São Paulo comply with the smoke-free environment law,¹² which suggests that they understood the benefit of the law for public health. The assessment of students that was conducted between June/July of each year probably revealed the positive impact of a well-conducted public health campaign in the perception of the third- and sixth-year medical students as of 2010. This change in beliefs and behaviors is corroborated by studies conducted in the last decade that demonstrated that disclosure and dissemination of health care knowledge lead to changes in the attitudes of medical professionals and the population in general.^26-29

The social environmental components, such as the implementation of smoke-free environments in hospital and medical education settings, are important for the development of the student’s own image as a future health professional who will serve as a role model for patients and society.³⁰ A change in the educational environment, such as the enforcement of the smoke-free environment law,¹² should be adopted on a broader scale in the education of medical students as part of the contribution to the construction of a “role model”.³¹ By means of a cultural change, medical students acquire skills and competences to cope with the new norms and values of his/her community.⁸ This concept is known as “community practices”³² and contributes, together with the years spent in medical school, to the development of the professional identity of the physician.⁸

Although we did not find a statistically significant association between smoking status and self-recognition as a role model, a physician who smokes may be less likely to motivate and advise smokers to quit.^10,11 Our results also cause concern because, although the cigarette smoking rate was low, we found a high proportion of water pipe experimentation (MPOWER Monitor policy), despite the knowledge that smoke is not filtered through the water pipe water, which could negatively impact on the MPOWER Offer policy (help to quit tobacco use).³ Other national and international studies have also found high rates of water pipe experimentation/use among medical students, which poses an additional challenge to increasing the effectiveness of smoking cessation treatment in Brazil and other countries.^33,34

Our study has some limitations. It was unable to assess the independent effects of policies other than the smoke-free policy implemented during the study period (e.g., in 2011, a new policy for pricing and taxing tobacco products was implemented in Brazil). Another limitation of the present study was that a reduced number of sixth-year medical students attend formal classes, mostly because they work full time in the hospital and have limited activities in the classroom, which hindered contact between students and researchers and reduced student participation in the study. Although approximately 60% of the third-year medical students were lost to follow-up, our analysis including students who were not successfully followed up produced results that were consistent with those students who were, which suggests that our conclusions might be somewhat generalizable.

In conclusion, knowledge of smoking cessation strategies and self-recognition as role models for patients/society increase over the course of medical school and are associated with the successful implementation of smoke-free policies in enclosed places and on the university campus. This will be important to improve smoking cessation treatment in the future.

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• Financial support:

  None.
• 2
  Study carried out at the Faculdade de Medicina, Universidade de São Paulo, São Paulo (SP) Brasil.

Publication Dates

• Publication in this collection
  08 Jan 2021
• Date of issue
  2021

History

• Received
  09 Dec 2019
• Accepted
  26 Sept 2020