| Variables | Coefficients of regression models | |||||||||||
| Premarital first sex | Condom use at first sex | Systematic condom use in the past 12 months | Number of sex partners in the past 12 months | |||||||||
| Boys | Girls | Boys | Girls | Boys | Girls | Boys | Girls | |||||
| Family environment | ||||||||||||
| Type of family household | ||||||||||||
| Two parents (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Mother only | 0.00 | 0.30 | −0.36 | 1.72** | 0.34 | 2.22** | 0.32 | 1.11* | ||||
| Father only | −0.10 | 0.12 | 0.42 | −0.04 | −0.17 | −0.14 | 0.06 | −0.39 | ||||
| No parent | 0.06 | 0.52*** | −0.81* | 0.79± | −0.47 | 0.41 | −0.43 | −0.04 | ||||
| Parents alive | ||||||||||||
| Both parents alive (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Father and/or mother deceased | 0.08 | −0.04 | 0.13 | −0.50 | −0.28 | −0.70 | 0.06 | −0.25 | ||||
| Living with grand-parents | ||||||||||||
| No (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Yes | 0.08 | 0.11 | 0.16 | −0.05 | 0.19 | −0.02 | 0.18 | −0.53 | ||||
| Ratio of number people under age 20 per adult | 0.01 | −0.03 | 0.00 | 0.32± | −0.31* | −0.04 | −0.11 | −0.01 | ||||
| Joint significance test of family environment | Not sign. | p < 0.010 | Not sign. | p < 0.050 | p < 0.100 | p < 0.100 | Not sign. | Not sign. | ||||
| Family processes | ||||||||||||
| Level of parental control | ||||||||||||
| Low (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Medium | −0.16± | −0.56*** | −0.13 | 0.06 | −0.18 | −0.93* | −0.79** | −1.25*** | ||||
| High | −0.46*** | −0.79*** | 0.29 | 1.04** | −0.57 | 0.29 | −0.73** | −0.31 | ||||
| Having discussed sexuality with family members | ||||||||||||
| No (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Yes | 0.18± | −0.10 | 0.27 | 0.92* | −0.05 | 0.58 | −0.22 | −0.07 | ||||
| Extrafamilial environment variables | ||||||||||||
| Educational level completed | ||||||||||||
| No education (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Elementary | 0.08 | −0.01 | −0.04 | 0.65 | 0.10 | 1.65*** | −0.27 | 0.01 | ||||
| High school | 0.00 | −0.35± | 1.05* | 1.81** | 0.66 | 2.53*** | −0.75* | 0.41 | ||||
| Participation in religious activities | ||||||||||||
| No religion | 0.38± | 0.24 | −3.75** | −0.91 | −1.51 | 0.01 | −0.65 | −0.37 | ||||
| Non-participant (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Participant | 0.09 | −0.12 | 0.18 | −0.21 | 0.58 | −1,00** | −0.37 | −0.19 | ||||
| Belonging to social groups | ||||||||||||
| No (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Yes | 0.13 | 0.27± | 0.25 | −0.27 | −0.04 | −0.06 | 0.25 | 0.01 | ||||
| Number of friends of the same sex | −0.03± | −0.02 | −0.02 | 0.06 | −0.07 | −0.05 | −0.08* | −0.07 | ||||
| Number of friends of the opposite sex | 0.18*** | 0.12*** | 0.02 | 0.08 | 0.15* | 0.28** | 0.31*** | 0.17 | ||||
| Having discussed sexuality with someone who is not a family member | ||||||||||||
| No (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| Yes | 0.77*** | 0.55*** | 0.07 | −0.08 | 0.17 | −0.12 | 0.65** | 0.73* | ||||
| Control variables | ||||||||||||
| Ethnicity | /Ethnic groups | |||||||||||
| Mossi (Ref.) | Mossi (Ref.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |||
| Peul/Touareg/Bella | Non-Mossi | 0.24 | −0.28 | −0.62* | −0.41 | −0.97*** | −0.55 | −0.07 | −0.04 | |||
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