・ Sex

Considering a total of 753 students, 454 were males and 299 were females. The sex ratio was 1.52 in favor of males.

・ Age

The average age of students was 23.8 ± 3 years old. Median was 24 years old. For males the average age was 24.2 ± 2 years old and 23.7 ± 2 years old for females. Extreme ages in our sample were 18 and 54 years old.

・ Marital status

Students were single in 95.1% of cases (n = 716), cohabiting in 2.2% of cases (n = 17) and 2.7% in couple (n = 20).

・ Housing mode

Students living in their parental family were 42.9% of cases (n = 323), 19% of cases lived with a guardian (n = 143). In 19.8% of cases (n = 149) with their friends, alone in 12.2% of cases (n = 91) and campus dormitory in 6.1% cases (n = 47).

・ Student status

The students were not scholarship grantees in 90.6% of cases (n = 682), scholarship grantees in 6.4% of cases (n = 48), civil servants in 1.7% (n = 13) and foreign scholarship grantees in 1.3% of cases (n = 10).

・ Level of knowledge of STIs

In our series, 27.8% of students had low knowledge about HIV/STI, 60.20% had average knowledge and 12% of students had deep knowledge.

・ Sexual Experience

In total 618 students, or 82.10% had sex, 60.20% were males and 39.80% females. It was noted that 81.93% of men and 82.27% of women had ever had a sexual experience (p > 0.05).

・ Age at first sex

The average age at first intercourse was 19 ± 2 years old. It was 19.14 ± 2 years old for females and 18 9 ± 2 years old for males. Extreme age at first intercourse was 11 years old and 32 years old.

・ Frequency of sex

The students had sex on average 2.61 times per week. Weekly frequency of sexual intercourse by gender is presented in Table 1.

・ Details of last sexual intercourse

The last sex that students had was consenting in 88.1% and in 11.9% of cases was imposed by the partner. The condom was used in 45% of cases.

・ Number of sexual partners

The number of sexual partners by gender was presented in Table 2.

・ Having sex with sex workers

In our study, 121 students, or 19.57% (121/618) of sexually active students had sexual contact with prostitutes. In this group, 95% were male and 5% were women (p < 0.001]. During the last twelve months prior to the survey, 54.78% of those who frequented prostitutes had only one sexual contact, and 45.22% had more than one sexual contact.

・ Sexual intercourse with a partner using drugs intravenously

According to the survey, 10 students, or 1.61% (10/618) had had sex with a partner using drugs intravenously.

・ Drunk sexual intercourse

In our study, 50 students or 8.1% (50/618) of sexually active students had already had sex while drunk. We noted 76% men and 24% women (p < 0.01).

・ Fellation practice

At the time of the survey, forty-eight women, or 19.51% (48/246) of sexually active women practiced fellation. This practice was recurrent among women who maintained sex with multiple sexual partners (78%).

・ Cunnilingus practice

P = 0.07.

At the time of the survey, 27 men, 7.25% (27/372) of sexually active men practiced cunnilingus. Also, it was found that 84% of men who practiced cunnilingus were in the age group of 15 - 24 years old. But no statistically significant difference had been found.

・ Practice of sodomy

Sodomy was practiced by 22 students, 6% (22/372) of sexually active men. In this population, 60% practiced without condoms and 40% with condom. Anal sex without a condom was mainly practiced by men (70%) who had multiple sexual partners.

・ Practice of homosexuality

In our study, 4 statements about homosexuality were noted, 1.07% (4/372) of sexually active men. Students who had homosexual behavior were all male and in 50% of cases they had not used condoms.

・ Concept of sexual assault

In our series, 04 students, or 1.62% of sexually active women reported having been sexually assaulted and 4 males students, representing 1.07% of sexually active men reported having committed a sexual assault.

・ Unprotected sex

In our study, 203 students, or 32.84% of sexually active students had not used a condom during their last sexual intercourse. Among them, 48.06% were male and 51.94% were women (p < 0.01). Also, 31.94% of men who had multiple sexual partners have had unprotected sex during their last sexual intercourse.

・ Sexual intercourse by simultaneous multiple partners

In our series, 20 students, or 3.23% (20/618) of sexually active students had sexual relations with several partners at once. It was noted that 75% were men and 15% women.

・ Not using a condom

The determinants of no condom use after multivariate analysis by logistic regression were shown in Table 3.

・ Determinants of multiple sexual partnerships

Determinants of multi sexual partnership after multivariate analysis by logistic regression were shown in Table 4.

・ Determinants of sex with prostitutes

The study of factors associated with having sex with prostitutes is presented in Table 5.

・ Multiple sexual partners

In our series, among sexually active students, 33.65% reported having multiple sexual partners. This frequency is lower than those of other African authors. Sepou Bangui [8] Yao in Abidjan [9] and Ditri in Togo [10] reported 41%, 63% and 58% respectively. Multiple partners is a major risk factor for the transmission of STIs and should be prohibited in youth. Awareness campaigns should help correct this behavior by assuming that prostitution is an significant risk factor for HIV infection spread [11] [12] .

・ Sexual intercourse with sex workers

In our series, 19.57% of students had sex with prostitutes in the past twelve months. Ditri in Togo [10] and Tiembré in Côte d’Ivoire [4] reported respectively 30.9% and 31.8% of students having sex with sex workers respectively. Since the adoption of the structural adjustment program by African leaders living conditions of African student became difficult. But this should not justify this behavior that exposes youth tremendously.

・ No use of condoms

In our study, 34.95% of students had not used a condom during their last sexual intercourse. Yao in Abidjan [9] and Ditri in Togo [10] reported 31% and 26% of non-use of condom during last sexual intercourse respectively. Some bad beliefs among students according to which direct contact is essential during intercourse could be a barrier to condom use. One cannot imagine that condoms price subsidizing will constitute a barrier to its use.

・ Homosexuality

Four students, representing 1.07% of sexually active men had sex with men. Ditri had reported a rate of 1.3% in Togo [10] Harding Nigeria 2% [13] Yao Côte d'Ivoire 2.95% [9] . Our figures and those of the other series suggest that homosexuality is a reality in our societies and deserves to be taken into account in all programs of STI prevention [14] .

・ Oral sex

Oral sex was practiced by 19.27% of sexually active students. Similar results are reported by other African studies [9] [10] . This practice is a potential source of contamination to STI and HIV and should be proscribed sexual practices of our students. It could also be practiced using the appropriate protective measures.

・ Drunk sex

In our series, 8.1% of students had sex while drunk. According to Tiembre in Côte d'Ivoire, 20.4% of students reported having had sexual intercourse in the same conditions [4] . Sex while drunk is a risk factor for infection with STIs and HIV. Alcohol abuse leads to a loss of control mechanisms of his own personality and allows involuntarily risk behaviors for STI [15] . Burkina Faso is a crossroads where cheap adulterated liquor is easily accessible by students. Students who are mostly without scholarships should stay away from drinking that might in danger their future and impoverish them more.

・ No use of condoms

Non-use of condom during sex is a risky behavior that persists among students. In multivariate analysis, only the female appeared to be the demographic factor significantly associated with not using a condom for sexual intercourse among students [OR = 1.5, 95% CI 1.01 to 2.16]. In fact, the females are 1.5 times more likely than men of not using condom during sex. Our results are comparable to those reported by Mondieli in Niger [16] . In fact, in his study on the determinants of risky sexual behavior of STI/HIV/AIDS among adolescents in Niger, female gender was significantly associated with not using a condom at their last sexual intercourse. These results show the vulnerability of the girl who should know how to negotiate condom use from her partner.

・ Multi sexual partnership

In multivariate analysis, only male gender was associated with this practice and the men were 3.3 times more likely to have multiple sexual partners than women. Talman in Côte d’Ivoire [17] showed in his study of social inequality and risky sexual behaviors among young people in Ivorian urban area, male sex was a determinant of risk sexual behaviors associated with the acquisition of multiple partners among Ivorian youth from 15 to 24 years in urban areas. The fact that African societies are more permissive sexuality of males over females could explain these findings [18] .

・ Sex with prostitutes

In multivariate analysis, only gender was statistically associated with having sex with prostitutes and males were 16.3 times more likely to have sex with prostitutes than females. According to some African beliefs, the man would value its sexual experiences and attendance of sex professionals, there could find it as a way of self- exploration of unsuspected pleasures areas, to raise strong emotions [19] .