PSYCHOSOCIAL AND BEHAVIORAL FACTORS ASSOCIATED TO STD / AIDS RISK AMONG HEALTH STUDENTS

This study aimed to identify and compare psychosocial and behavioral factors associated to STD/AIDS risk among students enrolled in the first and last years of the Nursing and Medical Undergraduate Programs at State University of Londrina. A convenience sample was selected from 263 enrolled students, and the 183 students who were sexually active (70.4%) had their data assessed. The Aids Risk Reduction Model framework was used to design the questionnaire in which a 5% statistical significance level was considered. Some risk factors were identified such as the perception of invulnerability, multiple sexual partners, consumption of alcoholic beverages before intercourse, and the discontinuous use or no use of condom. The risk factors are common both to the freshman and senior students, with no significant differences related to the passage of time or to the students’ higher educational level. Senior students tend to be monogamous which makes them feel safer and decrease the use of condom with their sexual partners.


INTRODUCTION
This study aimed to identify psychosocial and behavioral factors associated with the risk of sexually transmitted diseases (STD) and AIDS among health students.This group of future professionals will directly or indirectly intervene in educative actions linked to these diseases.Thus, the knowledge of psychosocial and behavioral factors associated to the risk of STD/ AIDS is extremely important to identify this population's current stage of preparation to deal with people vulnerable to these diseases.
The political, economic and social impact of STD/AIDS is of great importance in underdeveloped and developing countries because it is the cause of great morbidity among women between 15 and 44 years old (1) .In developed countries, there has been a decline in STD rates, despite an estimated 12 million cases per year for the United States (2) .The World Health Organization (WHO) estimated that 40 million adults and children were living with HIV until the end of 2001, one third of whom are young people between 15 and 24 years old (3) .
During the epidemic phase of HIV/AIDS, the incidence and prevalence of SDT needs to be monitored, because the presence of genital wounds favors the penetration of HIV, increasing infection risks by up to 18 times, when one of the partners has an untreated SDT (4) .Another reason to monitor STDs is that they are transmitted during sexual intercourse, presuming negligence regarding the consequences of the sexual relationship, such as not using condoms.
Young adults are exposed to the risk of acquiring HIV because they get involved with multiple partners and many of them do not use a condom in all sexual intercourse.In addition, most adolescents is initiating sexual activity earlier, exposing themselves to the risk of STD at a younger age.
In this context, many STD/AIDS prevention programs have been implemented all over the world in the attempt to contain these infections.
Undergraduate courses, especially in the health area, have tried to address the issue.However, a tendency towards a biologistic focus on the issue is observed, to the detriment of preparation for preventive education.
The lack of special education in medical or psychology course curricula compromises the training of future professionals to address sexuality (5) .The university has a fundamental role in STD/AIDS prevention strategies through its teaching, research, care and extension functions.
In human resource training, the university must consider that its students constitute a group of adolescents and young adults with a high risk of STD, including HIV, since they are initiating sexual activity at an early stage and frequently change partners (6) .
A study performed with college students in the health area showed that the majority presents precarious knowledge, reinforcing the need to implement specific and continuous educative actions for this group (7) .
This population must also be prioritized in research, since it is comprised of young people, one of the priority segments for preventive actions.In addition, college students in the health area are considered capable of assessing their own risk and associated factors, approaching other than biological aspects related to AIDS transmission.
The analysis of medical course curricula revealed that STD/AIDS are unsatisfactorily addressed, both qualitatively as quantitatively, since not all subjects that have an interface with the theme address it, and those that do are limited to clinical aspects, to the detriment of psychosocial, cultural and behavioral aspects (8) .Tarantola (9) .The ARRM identifies three stages that could influence the risk of acquiring STD/AIDS: 1) recognition and identification of one's own sexual behaviors as risk factors; 2) commitment to reduce high-risk sexual behavior and increase low-risk activity; 3) search and adoption of strategies to reduce high-risk sexual behavior (10) .
Thus, some instrument questions refer to data that characterize the sample (age, gender, course, year, marital status) and data that characterize sexual activities (age of sexual initiation, number of sexual partners, use of contraceptive methods, stable and/ or occasional relationship), while others refer to the ARRM variables, from which the following were selected: knowledge about transmission forms, perceived vulnerability, discussion about STD/AIDS, stereotyped health beliefs, type of sexual relationship, condom use, use of alcoholic beverages before sexual intercourse (10-12)   .A large majority of the answers were closed and the variables could be measured on an ordinal scale.
The structured questionnaire was previously

RESULTS AND DISCUSSION
In total, 260 (98.9%)Nursing and Medical students answered the questionnaire.We analyzed the answers of those sexually active, that is, 183 (70.4%) students.
A study of the sexual behavior of the Brazilian population, performed in 1998 (13) , showed that approximately 60% of people between 16 and 19 years old had already initiated sexual activity, increasing to 92.3% between 20 and 24 years old.
Specifically among college students from a city in the interior of São Paulo, it was found that 63.2% had an active sexual life (14) .
The data that characterize the sample of sexually active college students are presented in Table 1.  1 shows no significant difference between first-and last-year students in terms of course or gender.As expected, there was a significant difference regarding age and marital status, although only 7.1% of the students were married or had a consensual union.
Figure 1 shows that these students reported a start age of sexual activity between 12 and 28 years old.The younger individuals (first year) are initiating sexual activity earlier than the senior students, regardless of gender.First-year students were similar across both genders, with 50% of the cases varying between 16 and 18 years old (mean 16.9 for men and 16.6 for women).A greater variability is perceived among last-year students, with men initiating sexual activity between 16 and 20 (mean 17.7) and 50% of women initiating between 17 and 20 years old (mean 18.4).**One blank answer was excluded A study performed with the general Brazilian population found a lower mean age for the first sexual intercourse among men than in the present study (15.6 years old).In the case of women, the mean age found is similar to that of first-year students in this study (17 years old) (13)   .Among medical students at Ceará Federal University, the mean age for the first sexual intercourse was 15.8 years old, that is, between 9 and 27 years old (15)   .The number of sexual partners reported by UEL students varied between one and 15 in their life, and the general mean is 3.07 (DP=2.42)partners for first-year and 3.42 (DP=3.26)for last-year students.
The majority (68.2%) reported having sexual intercourse with two or more partners during the period, with no significant difference between course years.To better evaluate the significance of this indicator, the existent proportion between the number of partners and age can be established.However, our sample has a larger concentration of people between 17 and 25 years old, which dispenses with this care.
It is important to mention that the number of sexual partners of unknown serological state and several expositions increase the risk of STD/HIV/AIDS.
In the last 12 months, the number of sexual partners among UEL students varied from zero to six The continuous use of a contraceptive method during the whole period of sexual active life was reported by 67.6% of the studied students, with no statistical difference between the years.The most cited contraceptive methods of continuous use were condom (34.1%), contraceptive pill (28.6%), calendar method (6.0%) and coitus interruptus (withdrawal), (4.4%).
We found a significant difference between the two years (p=0.01)regarding the use of oral contraceptives, with a higher proportion of users among last-year students.However, the use of this method has made many young adults abandon condom use, since there is a great concern to avoid pregnancy, to the detriment of STD/AIDS prevention.
Although the difference in condom use as a contraceptive method was not significant, the proportion of first-year students who use it on a regular basis is higher than among last-year students (40.2% and 29.0% respectively).It is important to emphasize that 65.9% of all students reported discontinued use or no use of condoms, which results in higher risk of exposure to HIV and other STD.
The contingent of young people who maintain unprotected sexual intercourse is still very large and, even under contraceptive protection, young people who have many partners and do not use condoms systematically are unprotected against STD and AIDS.
The level of knowledge about AIDS transmission forms was established according to a codification of items that ranged from 14 (higher knowledge) to 70 points (lower knowledge).The sum of mean values was 18.8 and 18.2 points for firstand last-year students, respectively, showing a very good level of knowledge, with no statistical difference between the years.In general, the knowledge level about AIDS found among students was high.Although considered necessary, many researchers have shown that this high level of knowledge is not sufficient to reduce sexual activities of risk (6,10) .

Knowledge about HIV transmission
constitutes the first step in the reduction of risk behaviors, but perception or belief in personal risk is necessary and essential for a change in behavior with a view to risk reduction.
This risk perception, one of the variables of the ARRM model, can be evaluated by the degree of concern/anxiety related to the danger of acquiring STD/AIDS.However, it is important to highlight that the perception of risk should not be considered only at the individual level, but also in the social and cultural context, clearly influencing preventive actions.In our study, a low degree of concern or anxiety about having acquired STD/AIDS in the past can be observed, with some degree of concern regarding the possibility of acquiring it in the future, both among first-and lastyear students.When this variable is analyzed in terms of probability, it is clearly perceived in Table 2 that the STD/AIDS are seen as "other people's disease".Both first-and last-year students judge themselves with little or no probability of acquiring STD/AIDS, while individuals of the same age are seen with high probability of acquiring these diseases.
This low perception of risk among UEL students is confirmed, since 62.8% of them classify themselves as "low risk" and 23.9% as "no risk" regarding the possibility of acquiring STD/AIDS.
Although the perception of personal risk is low among the UEL students who participated in the study, 8.2% of them reported having presented some STD in the past.
Being acquainted with someone who has AIDS or knowing about someone who has AIDS can lead people to a higher perception of vulnerability to the infection.Hence, last-year UEL students should have a higher perception of risk than first-year students, since they had several contacts with patients with HIV/AIDS during the course.However, no statistical difference was observed between students of both years.
To adopt preventive actions, people should be convinced of their personal risk of acquiring HIV/ AIDS, which many times is determined by their beliefs.
Thus, heterosexual men who do not use drugs and also women tend to underestimate their personal risk, The analysis of data in Table 3 indicates that not all students have stable sexual partners, with a significant difference between students of the two years, prevailing more stable relationships between last than between first-year students, both in the last 12 months and in recent relationships.Likewise, the duration of the stable relationship is longer among last-year students (p=0.002).questions can be posed here, such as not choosing the condom by its quality, not being accustomed with its use, not having access to an adequate condom size, placing it incorrectly and using inadequate lubricants.
When questioned about who took the decision to use the condom, 71.9% of the students reported the couple, probably due to good communication between the partners.
Descriptive statistics of condom use frequency with stable and eventual partners in vaginal and anal sexual relationships demonstrated a higher tendency of less condom use among last-year students in vaginal intercourse with eventual partners than among first-year students.That is, last-year students with stable relationships are the ones who least use condoms on a regular basis in their sexual relationships.
Analyzing the possibility of condom use being influenced by the duration of the relationship among non married heterosexual adults, a study showed that the condom was used at the beginning of the relationship.However, as the relationship continued and trust was established, the preservative was no longer used (16)   .The use of alcoholic beverages before sexual intercourse, seen as strong predictors of risk behavior, was reported by 68.8% of students who answered the question.This can interfere negatively in condom use, leading to the risk of acquiring STD/AIDS.The use of other drugs was reported by 4.0% of the students.
The use of substances that disinhibit sexual repression, such as alcohol for example, or the use of injection drugs is correlated with a higher probability of involvement in sexual risk behavior.In Brazil, study performed with college students in Ceará found that 18.3% of men and 2.7% of women reduce condom use when they consume alcoholic beverages (15) .
In general, this study showed the magnitude of the STD/AIDS risk among college students, a group which does not consider itself at risk of acquiring these infections, with many students who have not incorporated safe sex practices in their sexual activities.

CONCLUSIONS
College students from the health area at UEL are well informed about AIDS transmission.This is expected, since it is a differentiated clientele among the social-cultural strata.However, some factors of risk to STD/AIDS are highlighted, such as the perception of personal invulnerability among freshmen and seniors.This was verified by the low degree of preoccupation/anxiety of acquiring these diseases in the past and the little concern about acquiring them in the future.Still, a majority considers itself with little or no probability of acquiring STD/AIDS, while individuals of the same age are seen with great probability of acquiring these infections.Another factor considered of risk is the reference to multiple sexual partners during life, both by first-and last-year students.The latter tend to adopt a single partner, which perhaps justifies the higher percentage of eventual or no use of condoms in sexual relationships.This risk is even higher for seniors who report continuous use of contraceptive pills, which can contribute to non-use of condoms, with a significant difference from first-year students.Regarding condom use as a contraceptive method, there was no statistical difference between the two course years, but it can also be consider a factor of risk if we analyze that the majority of them report no or discontinued use.Most students also report the use of alcoholic beverages, which can lead to non-use of condoms in sexual intercourse.In general, students showed themselves very similar on the different items under study, and there were no significant changes over time or according to graduation level.
The psychosocial and behavioral factors associated to the risk of STD/AIDS among college students, as well as the similarity observed regarding these factors among first-and last-year Nursing and Medical students at UEL indicate the that educative programs must be directed to adolescents and continued in college, preparing these future professionals for educative activities, emphasizing not only biological, but also psychosocial and behavioral ones.The different approaches to vulnerability must be highlighted, not only the individual, but also the programmatic and the social, thinking about these students as agents that transform reality.
tested and data were collected after authorization by the Research Ethics Committee and after contacts and clarifications to the respective course boards.Students were oriented about the research objectives and, after they had agreed to participate, they filled out the instrument.Participants were instructed not to identify themselves, thus guaranteeing the secrecy of the answers.Moreover, to keep the privacy of the answers, the questionnaire was accompanied by a "term of responsibility" signed by the researcher, assuming responsibility for the collected data and for total secrecy about the individual answers.After being filled out, the questionnaire was put in a sealed envelop, with the researcher's guarantee that it would only be opened after the return of all answered questionnaires per year and course.Data were tabulated through the epi-info program, version 6.04.Other computer programs used were Microsoft Excel for Windows 97, S-Plus 4.5 and SPSS 8.0.To characterize the group profile of the students under study, an exploratory analysis with descriptive measures is presented (mean, median and standard deviation), and frequency tables and Box-Plot charts are constructed.Some questions were also analyzed descriptively, using the result of the frequency tables.To compare students per course year, homogeneity tests were used for categorized data (Chi-square and Fisher's exact test) and the nonparametric test for ordinal data (Mann-Whitney).The statistical tests were calculated at a significance level of 0.05 (5%).Psychosocial and behavioral factors... Dessunti EM, Reis AOA.

Figure 1 :
Figure 1: Start age of sexual activity of first-and lastyear Nursing and Medical students, according to gender and course year.(n=182**) Psychosocial and behavioral factors... Dessunti EM, Reis AOA.Rev Latino-am Enfermagem 2007 março-abril; 15(2):267-74 www.eerp.usp.br/rlae0 mean was 1.24 (DP 0.90) sexual partners among first and 1.45 (DP=1.18)among lastyear students.The majority of them (71.9%) reported sex with only one partner in the last year, with no significant difference between course years.It should be mentioned that neither 23 students who reported having several partners during their life without determining how many, nor seven other students who did the same regarding the last 12 months were included in the mean estimations.This could increase the above mentioned means, especially in the first case.The data presented in this research are similar to data presented in the literature, showing that many UEL students are getting involved with multiple partners, regardless of the course.This can lead them to acquire STD/AIDS, especially if condom use is not consistent.
due to AIDS being popularly associated to masculine homosexual practices and to the consumption of injection drugs.Students in general do not present stereotyped beliefs regarding people with AIDS, which was demonstrated by the low scores of the analyzed variables, which could totalize from 7 to 35.The general sum of the means was 9.4 for first-year students and 9.8 for last-year students, without difference in terms of behavior between the two groups.However, alternatives such as "I am not the kind of person who could get AIDS" and "I don't have a sexual relationship with the kind of person who could have AIDS" presented the highest mean scores and highest standard errors for students of both years, confirming the perception of invulnerability regarding infection by HIV/AIDS.

Table 1 -
Distribution of the number and percentage of first-and last-year Nursing and Medical students according to age, gender, marital status and course

Table 2 -
Descriptive statistics of the perception of personal risk of acquiring STD/AIDS among first-and last-The perception of personal risk was analyzed on a scale from 1 to 5. The scores close to 1 indicate a very high probability of acquiring STD or AIDS Psychosocial and behavioral factors... Dessunti EM, Reis AOA.

Table 3 -
Distribution of the number and percentage of first-and last-year Nursing and Medical students, according to the type of relationship in the last 12 months, existence of stable relationship and duration

Table 4 -
Distribution of number and percentage of

Table 4 )
. It is also observed that many students report that it broke or escaped at least once in the last 12 months.Some Psychosocial and behavioral factors... Dessunti EM, Reis AOA.