Alcohol and other drug use (AOD) and risky sexual behaviours remain high among adolescents in South Africa and globally. Religiosity influences, mitigates and provides resilience against engaging in risky behaviours among young people but few South African studies have explored potential associations between religiosity, AOD use and risky sex. We report the prevalence of religiosity and association between religiosity and AOD use and risky sexual behaviours among learners in the Western Cape Province, South Africa.
Between May and August 2011, a cross sectional survey was conducted among 20 227 learners from 240 public schools randomly selected through a stratified multistage sampling design to determine the prevalence of AOD use and sexual risk behaviours. We performed univariate and multivariate logistic regression analyses to assess the association between religiosity, AOD use and risky sexual behaviours.
The learners were aged 10–23 years. Almost three quarters (74%) of learners reported high religiosity (defined as attending religious services or activities at least 1–2 times a month). More female than male learners had high religiosity. The prevalence of past 30 day reported alcohol, tobacco and cannabis use was 23%, 19% and 8% respectively. Compared to learners with low religiosity, those with high religiosity were less likely to engage in AOD use: specifically alcohol use, (AOR = 0.86, 95%CI: 0.76–0.97), tobacco use (AOR = 0.76, 95%CI: 0.67–0.87), cannabis use (AOR = 0.57, 95%CI: 0.48–0.68) in the last 30 days. They were also less likely to engage in risky sexual behaviours (AOR = 0.90, 95%CI: 0.81–0.99).
Citation: Francis JM, Myers B, Nkosi S, Petersen Williams P, Carney T, Lombard C, et al. (2019) The prevalence of religiosity and association between religiosity and alcohol use, other drug use, and risky sexual behaviours among grade 8-10 learners in Western Cape, South Africa. PLoS ONE 14(2): e0211322. https://doi.org/10.1371/journal.pone.0211322
Editor: Rachel A. Annunziato, Fordham University, UNITED STATES
Received: April 11, 2018; Accepted: January 11, 2019; Published: February 13, 2019
Copyright: © 2019 Francis et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Data Availability: Data is available upon request to researchers who meet the criteria for access confidential data. Unfortunately, we cannot share the data publicly due to ethical restrictions at this time. In this survey, we did not ask the study participants to consent on public sharing of either de-identified or aggregated data. That is possible with a waiver from the ethics committee at a later point. However, the dataset is available at MRC South Africa and the Western Cape Department of Social Development. To access the data please contact: Western Cape Department of Social Development: Dr Robert Macdonald: Robert.firstname.lastname@example.org MRC South Africa Prof Neo Morojele: Neo.Morojele@mrc.ac.za Prof Carl Lombard: Carl.Lombard@mrc.ac.za.
Funding: Funding for this survey was provided by the Provincial Government of the Western Cape via the United Nations Office on Drugs & Crime (Pretoria) and the South African Medical Research Council.
Competing interests: The authors have declared that no competing interests exist.
Adolescence is viewed as a period of experimentation and heightened risk of engaging in risky behaviours [1–4]. In this period, the most common risk behaviours are alcohol and other drug (AOD) use and risky sexual behaviours that often persist into adulthood [5, 6].
World Health Organisation and United Nations Office on Drugs and Crime reports show that AOD use and risky sexual behaviours continue to be significant public health problems [7–10]. Similar findings are reported by studies carried out in sub-Saharan Africa, including a recent systematic review on alcohol use in eastern Africa, the South African national youth risk behaviour survey, and a large survey on alcohol and other drug use among grade 8–10 learners in Western Cape Province, South Africa. These studies indicate that AOD and risky sexual behaviours are more common among male than female adolescents [11–14]. Since AOD use and risky sexual behaviours usually begin at a young age, potential interventions to address these issues should target adolescents and young people [15, 16].
To develop effective preventative interventions for AOD use and risky sexual behaviours among young people, it is important to identify individual and structural factors that prevent adolescents from initiating AOD use and engaging in risky sexual behaviours. Drug use in South Africa is linked to apartheid laws and the slow socio-economic transformation and equal distribution of wealth proposed in post-apartheid economic policies [17, 18]. Where apartheid legalised racial segregation, failure of economic policies in alleviating poverty among the majority of South African society, has facilitated segregation in the form of class grouping . Affluent individuals tend to live in affluent areas, predominantly those previously demarcated for white people, which tend to be pricier but in turn more secure, have better health care, education, and access to information. Those who continue to live in the areas previously demarcated for black people often do so because of lack of economic power to live elsewhere . These areas tend to have high rates of crime and violence, a legacy of apartheid where law enforcement was primarily used to control black people at the neglect of black-on-black crimes and drug trade and use . These stressful social realities enable a fertile environment of supply and demand for drug trade, with people potentially engaging in drug trade to gain an income in an otherwise limiting economy, while others seek an escape from their everyday reality . In addition, a large part of South Africa is increasingly urbanised, a process that is linked to a decline in traditional social relationships and forms of family structure . Urbanisation is associated with higher rates of unemployment  which often leads to high levels of psycho-social distress among parents, making these parents more likely to engage in inconsistent, distant, and harsh parenting . Furthermore, informal employment is also common in urbanised South Africa, which often translates to suboptimal parental supervision of children due to jobs that are physically and time demanding .
One of the potentially important modifiers of risky behaviours is religiosity, which continues to be highly prevalent in South Africa despite rapid social change . Religiosity played an important role in the lives of South Africans during the Apartheid period where churches and other places of worship provided people with an opportunity and place for both worship and for meeting to address the political challenges of the era . During the post-Apartheid era, religiosity and spirituality have continued to provide solace and meaning to vast proportions of the population, and particularly, members of disenfranchised communities which face high levels of unemployment and poverty and other social stressors .
Religiosity has been widely reported to have a potential for influencing, mitigating, or enhancing resilience with respect to harmful behaviours, thereby promoting good health and general wellbeing among adolescents, young people and adults [25–36]. For example, this literature has identified negative associations between religiosity and sexual risk behaviour, physical inactivity, and poor oral health. Furthermore, it shows that religiosity may be associated with enhanced coping in the face of chronic health conditions. Two systematic reviews reported differentially stronger effects of religiosity and health outcomes among males and older adolescents in comparison to females and younger adolescents [27, 34]. One proposed mechanisms through which religiosity is thought to influence positive health outcomes or behaviours is by imparting meaning, purpose in life, and peace of mind to individuals. Some commentators have argued that religiosity is associated with benefit finding, which refers to the phenomenon of finding positive meaning in negative events . In the face of stressful or traumatic events, those who are higher on religiosity may cope better and be less likely to resort to the use of alcohol or other drugs as coping mechanisms . Furthermore, religiosity also involves social interaction and cohesion within a social (religious) group where the social norms typically discourage engaging in behaviours that may be harmful or risky for health (such as avoiding drugs and alcohol) or may be considered to be morally unacceptable, such as sex before marriage [31, 38, 39]. Consistent with social identity theory, both adolescents and adults with high levels of religiosity (or a high sense of religious social identity) are likely to engage in the behaviours that are prescribed by the group, as they are likely to internalise group norms, and are inclined to want to avoid the risk of social exclusion . Indeed, just as other forms of strong social identity (such as ethnic identity) provide young people with a sense of purpose and belonging, and may be protective against risk behaviours, other forms of prosocial engagements, such as social activism and involvement in political movements may also afford them with a strong sense of belonging to a group and thereby be protective against engagement in risk behaviours .
Being religious is not synonymous with having high religiosity. Being a religious person could mean one believes in or belongs to a certain religious faith, while religiosity refers to how frequently one attends organized and non-organized religious activities, worship services, how often one reads religious books or other reading materials, and other domains such as attitude towards religion and religious practices irrespective of the faith being followed . In most studies, whether using a scale or a single item, religiosity has been assessed as the frequency of attending religious activities [32, 41–43].
In South Africa, a few studies carried out among adolescents, university students and adults have examined religiosity. These studies have found that higher religiosity (defined as frequency of attending or participating in religious events/activities) was inversely associated with harmful behaviours or poor health outcomes [32, 44–47]. For example, a small study (n = 90) among adolescents in the Western Cape Province reported on religiosity and drunkenness , but no large representative studies, to our knowledge, have reported on the prevalence of religiosity among learners in South Africa or explored associations between religiosity, AOD use and risky sexual behaviours. This study addresses this gap by reporting on the prevalence of religiosity among learners in Western Cape Province, South Africa and its association with AOD use and risky sexual behaviours.
Study setting and population
Between May and August 2011, a cross-sectional survey to determine the prevalence of AOD use and associated factors was carried out among 20 227 young people from 240 public schools in the Western Cape province of South Africa . At around the time of survey, the province had a population of 5.8 million people and an unemployment rate of between 21.6% and 29.3%. A total of 42.5% of the population had at least a Grade 12 education level. The residents of the province consisted of people of various “racial groups”, and the most commonly spoken languages were Afrikaans (49.7%), isiXhosa (24.7%) and English (20.2%). The province has amongst the highest rates of crime and violence, including drug-related crime , and a substantial problem of violence and gang-related crime. In addition, the province has high rates of substance use, including alcohol, tobacco and cannabis use . However, it has amongst the lowest rates of sexual risk behaviour and HIV compared to other provinces in South Africa .
The survey applied a stratified 2-level cluster sample design. The 49 circuits in the Western Cape were stratified as high, moderate or low risk for adolescent alcohol and drug use using information from police records (total number of drug related crimes reported over 12 months at nearest police station to the school; <200 (0 points), 200–300 (1 point), 500–1000 (2 points) and>1000 (3 points)and information from the Planning and Implementation Management Support -PIMS (decline in matric pass rate of>10% over three years, average pass rate <70% over the three years; 1 point for a school meeting a criteria), and social development offices (school on unsafe school list of department: 1 point) in each circuit. This information was scored over each circuit and the total score divided by number of schools. Circuits with an adjusted score of >3 was classified as high risk (n = 19), score of between 2–3 as moderate risk (n = 15) and <2 as low risk (n = 15). The low risk circuits were pooled into five regional strata and the moderate risk circuits into seven regional strata to ensure regional representation; the high-risk circuits were not pooled, realizing a total of 31 strata. The primary sampling unit within each stratum was a school. Ten schools from each stratum were randomly sampled proportional to the size of the school. In each school, one class in each of three grades (8, 9, and 10) was randomly selected. All learners in the sampled class had an opportunity to participate in the survey.
Data collection and ethical considerations
Learners completed a self-administered questionnaire that was available in the three dominant languages spoken in the Western Cape: English, Afrikaans and isiXhosa. The survey instrument included measures used in previous school surveys on AOD use . Specifically, the questionnaire collected information on socio-demographic characteristics of participants, their school experiences, and home circumstances; lifetime, past year, and last 30 days alcohol, tobacco, and other drug use; treatment for AOD problems; aggressive behaviour, mental health, sexual behaviour and delinquency, community crime and services perceived to be available for youth.
Survey administration and ethical considerations.
Passive informed consent was obtained from parents/guardians, written informed consent from learners above 18 years as well as written informed assent from those learners whose parents had provided consent for their participation in the study. A trained field team administered the survey. Learners whose caregivers had refused permission for their child to participate and those who did not wish to participate remained in the class during data collection but did not complete the questionnaires. Questionnaire administration took place in the classroom setting with learners completing them individually, overseen by the field team. No teachers or other school personnel were present or permitted to enter the venue while learners were completing the questionnaires. After each learner completed the questionnaire, s/he placed the completed questionnaire in an envelope and placed the sealed envelope in a sealed box. Every learner was given a referral card containing contact details for appropriate organisations dedicated to assisting young people with AOD use, family and other problems. The participants did not receive any reimbursement or compensation for participating in the study. Ethics approval was obtained from the Faculty of Health Sciences Research Ethics Committee at the University of Cape Town (HREC REF: 006/2011). Permission to conduct the survey was obtained from the Western Cape Department of Education.
The outcomes of interest for this paper were self-reported AOD use in the last 30 days (alcohol, tobacco, cannabis) and risky sexual behaviour (defined as reporting at least one of eight possible risky sexual behaviours). The eight sexual behaviour questions were “Did you have sex before your 15th birthday?”, “Have you ever been high on drugs or alcohol when you had sex with someone?”, “Have you had sex with two or more people in the past 3 months?” “Have you ever had anal sex (this means when the penis enters the anus)?” And the following additional questions, “Have you ever been sexually involved with someone who is more than 5 years older than you?”, “Have you ever thought you or your partner might be pregnant?”, “Have you traded sex for money/drugs/alcohol in the past 12 months?)”.
The primary exposure of interest for this paper was religiosity. Participants were classified as having high religiosity if they reported attending a religious service or activity “1–2 times a month or weekly or more”, and low religiosity if they reported “never or rarely” attending a religious service or activity. Other exposures included the mental health status and aggressive behaviour assessed by the Problem Oriented Screening Instrument for Teenagers (POSIT), which is a screening tool validated for use among learners in South Africa , academic factors (repeated a grade, ever expelled from school and considering quitting the school), and witnessed a crime. The POSIT scores for mental health were categorized as low risk (1–4), medium risk (5–10) and high risk (≥11). The POSIT scores for aggressive behaviours were categorized as low risk (1–2), medium risk (3–9) and high risk (≥10). The variable “witnessed a crime” was categorised as, “never witnessed a crime event”, “ever witnessed 1 or 2 events”, and “ever witnessed at least 3 events”. The crime events enquired about whether learners had seen someone selling drugs, using drugs, getting shot with a gun, being beaten, getting stabbed, and being forced to have sex when they did not want to.
The demographic variables included in the analyses were sex, school grade, age (categorized as 10–14, 15–17, and 18–23 years), mother’s education (categorized as no formal or less than primary and primary education, secondary education, and college or university education), whether the learner reported living with at least one parent, population group, household financial circumstances and learners’ race. Given the South African context, the participants were asked to self-identify as “White”, “Black”, “Coloured” (of mixed race ancestry) and “Indian.” These refer to demographic markers that are used to monitor socio-economic disparities and do not signify inherent characteristics.
We used Stata version 14.1 for data analysis. The survey analysis platform in Stata was utilized to account for sampling weight, stratification and clustering. We computed the final study sampling weight using the total number of learners in a school, as provided by the Department of Education for 2010 as a proxy for the total number of learners in grade 8–10 in a school (school level weight) and the probability of sampling a single class within a grade (grade level weight).
The prevalence of reported tobacco, alcohol and cannabis use in the past 30 days, binge drinking in the last two weeks and engagement in at least one risky sexual behaviour was computed. These findings are presented as proportions (%) and 95% CI (Confidence Intervals).
We performed univariate logistic regression to assess the association and the direction of the association of the AOD (alcohol use in the last 30 days, binge drinking in the last 2 weeks, tobacco use in the last 30 days, cannabis use in the last 30 days) and risky sexual behaviours variables with religiosity and other identified exposures. The other identified exposure variables included demographic variables (age, sex, school grade, household financial circumstances), academic factors, and witnessing a crime, mental health and aggressive behaviour scores.
We fitted four multivariate logistic regression models with each of the AOD use variables and risky sexual behaviours. An a priori decision was made that exposure to crime, sex, household income, and school grade are confounders and therefore entered in the multivariate logistic regressions model regardless of the p value [11, 48]. Any other variable that had a p value of ≤0.20 was included in the multivariate logistic regression model. Univariate associations are reported as crude Odds Ratios (OR) and 95% CI and p values, and multivariate associations as adjusted Odds Ratio (AOR) and 95% CI and p values.
General characteristics of the study population
We present the findings of 20227 grade 8–10 learners in Western Cape, South Africa who participated in the survey. Overall, the refusal rate was 5% and it was similar across all strata. Table 1 shows that the majority (67%) of the learners were in the 15–17 years age band. Most of the learners identified themselves as Coloured (of mixed race ancestry) (56%) and black African (33%). A total of 58% of learners were living in a household that could afford important, luxury and extra goods. Amongst all learners, 88% were living with either or both parents. A quarter of the learners had repeated a grade after failing an exam and 23% had considered quitting school. Most of learners (74%) reported high religiosity, with more females than males having high religiosity (76% vs 70%, p <0.001). Two thirds of the learners had witnessed one or more crime event in the last 12 months and this was not significantly different between females and males. More than half of the learners were at medium to high risk for mental health problems (55%) and aggressive behaviours (63%) respectively. The prevalence of reported alcohol use in the last 30 days was 23% (95%CI: 21.7–24.1), and that of binge drinking in the past two weeks was 14% (95%CI: 13.6–15.4). Tobacco and cannabis use were fairly common with 19% (95%CI: 17.9–20.2) and 8% (95%CI: 7.3–8.7) of learners reporting last 30 days tobacco and cannabis use respectively. Among the learners, 28% (95%CI: 26.2–29.5) reported ever having engaged in at least one risky sexual behaviour.
Religiosity and alcohol use in the last 30 days
In multivariate analyses, learners with high religiosity were significantly less likely to report using alcohol in the last 30 days (AOR = 0.86, 95%CI: 0.76–0.97). Alcohol use in the last 30 days was also positively associated with belonging in the age band 15–17 years, being in a higher school grade than grade 8 (9 or 10), and experiencing adverse academic events. In addition, participants who reported having enough money for important and luxury and extra goods, being White, and having a medium or high risk POSIT score for mental health and aggressive behaviours, were more likely to report alcohol use in the last 30 days than those below the median scores (Table 2).
Religiosity and tobacco use in the last 30 days
Learners with high religiosity were significantly less likely to report using tobacco in the last 30 days than learners with low religiosity (AOR = 0.76, 95%CI: 0.67–0.87). Tobacco use in the last 30 days was also associated with living with at least one parent, being in a higher grade (9 or 10), race, adverse academic events and being a male learner. Tobacco use was further associated with medium and high risk POSIT scores for mental health and aggressive behaviours and witnessing more than three crime events (Table 3).
Religiosity and cannabis use in the last 30 days
Compared to learners with low religiosity, learners with high religiosity had diminished odds of reporting cannabis use in the last 30 days (AOR = 0.57, 95%CI: 0.48–0.68). In addition, cannabis use in the last 30 days was associated with witnessing 3 or more crime events, adverse academic events and medium and high risk POSIT scores for mental health and aggressive behaviour. Race, male learners, and belonging to grade 9 or 10 were also significantly associated with reported cannabis use in the last 30 days (Table 4).
Religiosity and risky sexual behaviours
The results of the multivariate analyses, learners with high religiosity were significantly less likely to report sexual risk behaviour (AOR = 0.90, 95%CI: 0.81–0.99) relative to learners with low religiosity. Reporting at least one risky sexual behaviour was significantly associated with medium and high risk POSIT scores for mental health and aggressive behaviours, adverse academic events, and being male and the race of the learner (Table 5).
To the best of our knowledge, this is the first large study in South Africa to report on the prevalence of high religiosity and the association of high religiosity with AOD use and risky sexual behaviours. Most learners reported high religiosity (i.e. attendance of religious activities at least once-twice per month) and this was higher among female learners than among male learners. The results also indicate high levels of AOD use and risky sexual behaviours. These results are consistent with the literature on substance use and sexual risk behaviour in sub-Saharan Africa [11, 12, 14–16]. Our findings show that learners with high religiosity had significantly reduced odds of AOD use in the last 30 days, and risky sexual behaviours. Furthermore, similar to other studies among adolescents and young people in South Africa and other parts of Africa, poor academic performance, higher scores of mental health status and aggressive behaviours, being male and having witnessed a crime were associated with AOD use [12, 54–57].
Our findings further confirm the link between higher religiosity and positive health behaviours, which is in agreement with previous studies conducted among young adults and adults in South Africa [46, 47, 58], and other countries [25, 26, 28, 29, 31–34, 43]. These studies reported that higher religiosity has inverse association with risky behaviours and poor health outcomes, suggesting that religiosity may be a potential avenue for inclusion into AOD use and risky sexual behaviour interventions among adolescents and young people. Even though religiosity has had positive effects on health outcomes, using faith-based platforms for public health interventions is welcomed but should be evidence-based . Nevertheless, health intervention providers for young people could explore and strengthen religiosity among those reporting to be religious but with low religiosity. For example, in the USA, Griffith et al (2010) implemented an HIV intervention, bridging faith-based platforms and the public health communities successfully .
Our study included a large and representative sample of grade 8–10 learners in Western Cape Province, however, the findings should be interpreted in light of the limitations highlighted below. First, the study design was cross-sectional and therefore it is not possible to ascertain the temporal relationship between religiosity and AOD use and risky sexual behaviours. Second, learners self-reported their religiosity, AOD use, and risky sexual behaviours and therefore there was a risk of social desirable responses that would lead to underestimation of the magnitude of AOD use and risky sexual behaviours, thereby biasing our results towards the null. We attempted to reduce the social desirability responses by using self-administered questionnaires and ensuring anonymity. Third, we acknowledge the potential of misclassification due to poor recall, especially regarding the questions on risky sexual behaviours, such as age at sexual debut. Fourth, this being a secondary analysis of the behavioural survey data, we could not include prosocial influences such as cultural activities/political movements/ social activism that may provide a space where young people feel a sense of belonging and purpose and could lead to either increased or reduced risk behaviours. Fifth, we used a narrow definition of religiosity, which did not include elements of spirituality. Sixth, we did not assess post-traumatic stress disorder which could potentially increase the risky behaviours but we adjusted all the analyses for mental health and aggressive behaviour status. Finally, the findings may only be generalizable to the population of learners in public schools in the Western Cape Province and a similar population in South Africa.
This study’s findings call for further exploration of how religious practice could serve as a platform for AOD use and risky sexual behaviours interventions. As a starting point, one could borrow a leaf from a faith-based intervention in the USA that encouraged a discussion of health topics among youths during or after the religious services for the AOD use and risky sexual behaviours. Furthermore we could use findings of establishment youth ministry on the influence of youth development in Western Cape, South Africa [22, 60]. Another potential avenue is to include religiosity in AOD use and risky sexual behaviour reduction interventions by promoting higher religiosity among those religious adolescents with low religiosity who are already using AODs. In addition, based on the tenets of social identity theory and from the findings of this paper, we could identify and assess interventions that have included the engagement of adolescents and young people in (secular or religious) prosocial networks, which could give them a stronger sense of belonging and purpose . In addition, since parenting has proven to be an effective way to modify substance use among adolescents and young people, religiosity could be included as part of parenting interventions .
We thank all study participants for participation and provincial authorities for their permission to allow us conduct the study. We acknowledge the contribution of SADC Research Centre fieldwork and data management teams, the United Nations Office on Drugs & Crime (Pretoria) for technical guidance, Trishanta Padayachee for her assistance with the sampling design, and Xabiso Nokoyo, Shirley Ndwayana, Busi Zwane, and Nomtha Madlingozi for assistance in translating the questionnaire and other documents.
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