Abstract
There is no national representative estimate on pre-marital sex and its association with peer pressure and watching pornography among young individuals in Ethiopia. So, this study aimed to estimate the pooled prevalence of pre-marital sex and its association with peer pressure and watching pornography among young individuals in Ethiopia. A comprehensive search of international databases including CINAHL, Google Scholar, Cochrane Library, PubMed, HINARI, and Global Health was carried out to estimate the pooled prevalence of pre-marital sex and its association with peer pressure and watching pornography among young individuals in Ethiopia. The data were analyzed using STATA/SE version-14. The random-effect model was used to estimate the effect size and I-squared statistics and Egger's test were used to assess the heterogeneity publication bias respectively. A total of thirty-two studies with 18,354 study subjects were included in this meta-analysis. The pooled prevalence of premarital sex among young in Ethiopia was 33.59% [95% CI (29.09, 38.09)]. There was significant heterogeneity among the included articles (I2 = 97.9, p = 0.000). Young individuals who experienced peer pressure were three times more likely to practice premarital sex compared to their counterparts [OR = 2.90, 95%, CI (1.01, 8.31)]. As the crude analysis result indicated, there was a significant association between watching pornography (sex movies) and premarital sexual practice [OR = 3.41, 95% CI (1.99, 5.84)]. However, after doing trim-and-fill analysis, the publication-bias adjusted OR indicates the absence of significant association between watching pornography and premarital sex [OR = 1.23, 95% CI (0.69, 1.76)]. The proportion of premarital sex among young individuals in Ethiopia remains high. Peer pressure had a statistically significant association with premarital sexual practice. However, the publication-bias adjusted OR indicates the absence of a significant association between watching pornography and premarital sex. Peer counseling services, sex education, and behavioral change communications should be strengthened to address factors associated with pre-marital sexual practices.
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World Health Organization (WHO) defines young as a person aged from 10 to 24 years old1. Young individuals are a large segment of the population comprising 1.8 billion (27%) world population of which 90% of them live in developing countries2,3. Young is the stage of transition from childhood to adulthood and is characterized by a spurt of physical, biological, emotional, social, mental, and psychosexual developments which are accompanied by either positive or negative behaviors depending on the environment that the child is brought up4. Many important life events and risky behaviors including pre-marital sexual practices start during this stage5.
Premarital sex is penetrative sexual intercourse performed before a formal marriage6. The rate of premarital sexual practice among young’s varies from country to country. It is 4.3% among university students in Turkey7, 18.1% in China8, and 47.5% among youth in Southern Iran9. It is quite common in Africa compared to other continents. A recent study in Nigeria revealed that the rate of premarital sex among university students was 45.8%10 and it was 70.4% and 74% in Tanzania and Uganda respectively11,12. In Ethiopia the prevalence ranged from 17.5% to 71.9%13,14.
Premarital sexual debut among youth is mostly unprotected and therefore, exposes them to the risk of Human Immune Virus/ Acquired Immunodeficiency Syndrome (HIV/AIDS) and other sexual transmitted infections (STIs)8,15,16. It is also associated with a greater risk of unwanted pregnancy and unsafe abortion leading to maternal morbidity mortality17,18,19. Moreover, it also leads to, loss of family support, self-respect, and depression17. Premarital sex is affected by several factors such as socio-demographic characteristics of young (age, sex, and level of education)20,21,22, peer pressure8,17,22,23,24, substance use8,17, having pocket money, discussion with parents about sexual issues20, religiosity21 and watching pornography8,24.
The premarital sexual practice among young individuals was well studied in different parts of Ethiopia5,13,14,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53 and a systematic review and meta-analysis study was also done in 2019 even if it is not published54. But, the study considered only twenty-four studies in the review and couldn't assess the association between peer pressure and premarital sex. There is no national representative estimate on the association between peer pressure and watching pornography with premarital sex in Ethiopia. So, this study aimed to estimate the pooled prevalence of pre-marital sex and its association with peer pressure and watching pornography among young individuals in Ethiopia. Peer pressure and watching pornography are clinically important and frequently mentioned factors affecting premarital sex although they have inconsistent findings across the included articles. Sexual and reproductive health of the young is one of the primary intervention areas of Sustainable Developmental Goals SDGs)55. In line with this, the Ethiopian government also develop different strategies targeting adolescents and youth reproductive health that has to be achieved at the end of 202056. So, this meta-analysis will generate crucial evidence for program planners and policymakers to design evidence-based interventions to decrease premarital sex.
Materials and methods
Searching strategy
This meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA-2009) guideline57 (see Supplementary File 1) and the protocol for this study was registered and published at PROSPERO, an international prospective register of systematic reviews with the identification number of CRD42020179502. A comprehensive search of international databases including CINAHL, Google Scholar, Cochrane Library, PubMed, HINARI, and Global Health was carried out to estimate the pooled prevalence of pre-marital sex and its association with peer pressure and watching pornography among young individuals in Ethiopia. The search was conducted from February 1up to March 30, 2021by three reviewers (YD, NC, and HF) independently and articles published from 2000 up to March 30, 2021were included in this systematic review and meta-analysis.
In the searching process, studies were identified using the following key terms: "proportion", "prevalence", "incidence", "magnitude", "premarital sex", "premarital sexual practice",“ premarital sexual debut”, “premarital sexual intercourse”, "predictors", "risk factors", "determinants", "factors", "associated factors", "students", " adolescents", "youths", " young ", "Ethiopia" using Boolean operators "AND" and "OR"(see Supplementary File 2).
Eligibility criteria
Inclusion criteria
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Population: This meta-analysis includes studies conducted among young individuals of male, female, or both sexes,
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Exposure: young individuals who experienced peer pressure and watch pornography (sex films),
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Comparison: young individuals who didn’t experience peer pressure and didn't watch pornography (sex films),
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Outcome: Studies assessed premarital sex as a primary outcome,
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Study setting: All community and institution-based studies,
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Study design: Studies with a cross-sectional study design,
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Publication: Published and unpublished articles,
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Country: Studies done in Ethiopia,
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Language: studies written in the English language,
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Time frame: studies published from 2000 up to March 30, 2021were included in this study.
Exclusion criteria
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Those studies with the absence of full texts were excluded.
Outcome measurement
This meta-analysis measured two key outcomes. The primary outcome of the study was to estimate the pooled prevalence of premarital sex which was computed from the individual article by dividing the number of young individuals practicing premarital sex to the total sample size multiplied by 100. The second outcome was the association between peer pressure and watching pornography with premarital sex. For the second outcome, the association between explanatory variables (peer pressure and watching pornography) and premarital sex was determined in the form of the log odds ratio.
Data extraction and quality assessment
All articles gathered from different databases were exported to the endnote reference manager, and duplicates were identified and removed. The remaining articles were screened based on their title and abstract and evaluated in the context of the inclusion criteria by three independent reviewers (MY, MA, and MA). Then Joanna Briggs Institution (JBI) quality assessment tool was used to appraise the qualities of the screened articles and those articles scoring 50% and more were included in the analysis58,59. In this meta-analysis, all of the included studies scored 50% and more thus, all are included in the review. Two authors (BK and BA) independently assessed the quality of the studies and the mean score was taken to manage the different results obtained from both reviewers.
All the necessary data were extracted using a Microsoft Excel sheet. The data extraction sheet includes; the name of the author, study area, region, publication year, year of study, study design, study setting, the prevalence of premarital sex, response rate, sample size, number of young individuals practicing premarital sex, residence, sex and frequencies of watching pornography film and peer pressure in the form of a two by two tables. Four independent authors (EA, AAK, FY, and AA) extract all the data and the discrepancy between reviewers was resolved through consensus.
Data analysis
All the extracted data were exported to STATA version-14 for further analysis. The random effect model at a p value < 0.05 was used to compute the pooled prevalence of premarital sexual practice among students in Ethiopia60. In addition, the association between peer pressure and watching pornography with premarital sexual practice was statistically estimated using pooled odds ratios with 95% CI.
The I2 statistic was used to assess the heterogeneity between the included studies and I2 tests at a value of 25%, 50%, and 75% were considered as low, medium, and high heterogeneity. Subgroup analysis and univariate meta-regression were carried out to identify the source of variations among studies that exhibited severe heterogeneity. Moreover, publication bias was assessed using the funnel plot and egger's test. A p value of less than 0.05 in the Egger regression test is considered as the presence of statistically significant publication bias61.
Results
Study selection
A total of 473 articles were identified by searching databases; CINAHL, Google Scholar, Cochrane Library, PubMed, HINARI, and Global Health. Of this, 162 duplicate files were removed using endnote reference manager, 270 articles were dropped due to their titles and abstract and the remaining 41 articles were critically appraised based on the inclusion and exclusion criteria. Finally, 32 full-text articles were included in the systematic review and meta-analysis (Fig. 1).
Characteristics of the included studies
A total of thirty-two cross-sectional studies involving 18, 354 study subjects were included to estimate the pooled prevalence of premarital sexual practice and its association with peer pressure and watching pornography among young individuals in Ethiopia. Regarding the geographic area, thirteen studies were from Oromia region14,26,29,34,38,40,41,42,43,45,47,51,52, seven studies were from Amhara region25,32,33,35,36,37,50, five studies were from Tigray region13,27,48,49,53, six studies were from SNNPR5,28,30,39,44,46 and the rest one study was from Addis Ababa, capital city of Ethiopia31. The sample size ranged from 230 students among a study done in Alamata, Tigray region27 to 2,766 students among a study done in Eastern Ethiopia, Oromia region38 (Table 1). Regarding the sex of the student, twenty-nine studies were conducted among students of both sexes5,13,14,25,26,27,30,31,32,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53 and the remaining three studies were done among female students only28,29,33.
Prevalence of pre-marital sex in Ethiopia
The result of 32 studies indicated that the pooled prevalence of pre-marital sex among young individuals in Ethiopia was 33.59% (95% CI: 29.09, 38.09). A random-effect model was employed to estimate the pooled effect due to significant heterogeneity across the included studies (I2 = 97.9%, p = 0.000) (Fig. 2).
The funnel plot and eggers test were used to assess the presence of publication bias. In the funnel plot, effect estimates were distributed asymmetrically which is a sign of the presence of publication bias (Fig. 3). However, the result of the eggers test indicated the absence of statistically significant publication bias (P = 0.155).
Subgroup analysis and meta-regression
To identify the source of heterogeneity among the included studies, subgroup analysis based on the regions where the studies were conducted, sex of the student, residence, study setting, sample size, and the quality score was performed. Although the heterogeneity among the included articles was not resolved, the prevalence of premarital sex was significantly higher among studies done in the Oromia region [37.6%, 95% CI: (28.9, 46.3)] compared to studies conducted in Addis Ababa and Tigray region [29.8, 95% CI: (20.6, 39). Similarly, the prevalence of premarital sexual practice varied significantly among studies conducted in refugee camps and in the community [59.7, 95% CI: (35.9, 83.5)] compared to studies conducted in secondary and preparatory school [27.3, 95% CI: (23.2, 31.5)] (Table 2).
Univariate meta-regression analysis was also carried out using study year, response rate, and sample size as a predictor variable. However, neither of them found to be a statistically significant source of heterogeneity among the included studies (Table 3).
The association between peer pressure and premarital sexual practice
The association between peer pressure and premarital sexual practice was estimated based on the results of six studies33,36,42,43,46,48. The result showed that young individuals who experienced peer pressure were three times more likely to practice premarital sex compared to their counterparts [OR = 2.90, 95% CI (1.01, 8.31)]. DerSimonian and Laird random-effects model was used to examine the association due to severe heterogeneity among the included studies (I2 = 96.1%, p = 0.000) (Fig. 4). Publication bias was assessed by using the eggers test and the result of which showed the absence of significant publication bias (P = 0.140).
The association between watching pornography and premarital sexual practice
A total of seventeen studies were used to assess the association between premarital sexual practice and watching pornography14,25,26,27,29,30,32,35,36,41,42,43,46,48,50,51,52. The random-effect meta-analysis evidenced that the odds of practicing premarital sex was 3.4 times higher among young individuals who watched pornography (sex movies) compared to students who didn’t watch sex movies[OR = 3.41, 95% CI (1.99, 5.84)]. Significant heterogeneity was observed among the included articles (I2 = 95.9%, p = 0.000) (Fig. 5).
The presence of publication bias was checked by using both funnel plot and eggers test. The result showed that there was an asymmetrical distribution of the individual studies on the funnel plot, indicating the presence of publication bias (Fig. 6). The Egger tests statistics also revealed the presence of statistically significant publication bias (P = 0.005).
Duval and Tweedie’s 'trim and fill' analysis was conducted to adjust the effect of publication bias among studies included to determine the association between premarital sex and watching pornography62, and there was significant variation in the newly estimated pooled odds ratio (the adjusted point estimate) [OR = 1.23, 95% CI: (0.69, 1.76)] as compared to the initial or observed point estimate[OR = 3.41, 95% CI: (1.99, 5.84)] (Fig. 7).
Discussion
In this study, the pooled prevalence of pre-marital sex among young individuals in Ethiopia was 33.6% (95% CI: 29.09, 38.09). Peer pressure had a statistically significant association with premarital sex. However, as the trim-and-fill adjusted OR indicated, there was no significant association between watching pornography and premarital sex.
The pooled prevalence of premarital sex was comparable with studies conducted in Bangladesh (30%)24and Vientiane, Lao PDR (34%)22. But, it was higher than studies conducted in Ebonyi State, Nigeria(27.6%)63, Katmandu, Nepal(19.6%)64, Malaysia(5.4%)65, and Vietnam (16.9%)66. However, the finding is lower than a study conducted in Beijing, China (41%)67 and another study conducted in Nepal (39%)23. The possible justification for the discrepancy could be due to the differences in the study population, study settings, and educational, cultural, socioeconomic, and lifestyle differences across countries. In addition, the difference in the research methodology (study design and data collection method used), the difference in the adolescent reproductive health care policy, reproductive health service coverage, and utilization across countries could be responsible for the variation.
In this meta-analysis, peer pressure was found to increase the likelihood of engaging in pre-marital sex similar to a study conducted in Anambra state of Nigeria68, University of Maiduguri, Nepal69, and Vientiane, Lao PDR22. Studies conducted in Singapore17, Kaduna state university70, and Vietnam66 also point out that the odds of pre-marital sexual practice were higher among students with peer influence compared to their counterparts. This could be because peer pressure is one of the most influential factors that determine youth’s sexual behavior. Peer influence is powerful in changing the attitude, behavior, and personality of young individuals. Young individuals usually tend to follow the behavior that their intimate peers practiced71. There was a piece of evidence that, peer behavior in all societies is a model for individuals’ behavior, especially in matters of sexuality among youths and adolescents72.
As egger's test evidenced, significant publication bias was observed among studies include to determine the association between premarital sex and watching pornography. To adjust the effect of publication bias among the included studies, Duval and Tweedie’s 'trim and fill' analysis was conducted. After doing trim-and-fill analysis, a major discrepancy was observed between the initial or observed point estimate (crude OR) and publication-bias adjusted OR i.e. the crude OR shows the presence of a statistically significant association between watching pornography and premarital sex whereas the adjusted OR indicates the absence of significant association between watching pornography and premarital sex.
As a limitation, only four among the nine regions were represented in this meta-analysis. The study was also limited to articles published only in the English language. Heterogeneity was observed in all analyses although we performed meta-regression and subgroup analyses. Moreover, all of the articles included in this meta-analysis were cross-sectional and had a small sample size, and thus might affect the pooled estimates.
Conclusions
The proportion of premarital sexual practice among young individuals in Ethiopia was considerably high. Peer pressure had a statistically significant association with premarital sex. However, the trim-and-fill adjusted OR indicates the absence of a significant association between watching pornography and premarital sex. The national government should design and implement adolescents and youth-sensitive sexual and reproductive health policies and strategies to tackle premarital sexual practice and its consequences. Educational institutions should incorporate skill-building programs in the curriculum and design and implement peer-to-peer counseling services to cope with peer influence. Sex education and behavioral change communications should also be strengthened to address factors associated with pre-marital sexual practices.
Data availability
The datasets used and/or analyzed during this study are available from the corresponding author on reasonable request.
Abbreviations
- HIV/AIDS:
-
Human immune virus/acquired immunodeficiency syndrome
- JBI:
-
Joana Brigg's Institute
- PRISMA:
-
Preferred reporting items for systematic reviews and meta-analysis
- SDG:
-
Sustainable development goal
- SSA:
-
Sub-Saharan African
- STI:
-
Sexual transmitted infections
- WHO:
-
World Health Organization
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The authors would like to acknowledge the public health staff for their help and Wollo University library for providing an available online database.
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Y.D. and H.F.: involved in the conception of a research protocol, literature review, study design, data analysis, and interpretation; M.Y., N.C. and M.A.: involved in literature review and screening; E.A., A.A.K., A.A., M.A. and F.Y.: undertake data extraction; B.K. and B.A.: undertake a quality assessment; Y.D. and H.F.: involved in the drafting of the manuscript; N.C.: involved in reviewing the manuscript. All authors have read and approved the manuscript.
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Damtie, Y., Cherie, N., Fentaw, H. et al. Pre-marital sex and its association with peer pressure and watching pornography among young individuals in Ethiopia: a systematic review and meta-analysis. Sci Rep 12, 9572 (2022). https://doi.org/10.1038/s41598-022-13448-y
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DOI: https://doi.org/10.1038/s41598-022-13448-y
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