| Characteristics | Percent |
| Age | |
| 15 | 21.7 |
| 16 | 21.8 |
| 17 | 24.0 |
| 18 | 21.0 |
| 19 | 11.4 |
| Sex | |
| Male | 46.4 |
| Female | 53.6 |
| Marital status | |
| Never married | 98.3 |
| Ever married | 1.7 |
| Socio-cultural environment factors | |
| Living arrangement | |
| With parents | 75.9 |
| With spouse | 1.3 |
| Elsewhere | 22.1 |
| Not stated | 0.7 |
| Attending school | |
| In school | 86.6 |
| Out of school | 11.5 |
| No information | 1.9 |
| Most important source of sexuality information | |
| Teacher | 67.1 |
| Parent | 15.3 |
| Other sources | 17.6 |
| Place of residence | |
| Central | 5.5 |
| Dagoretti | 4.3 |
| Embakasi | 64 |
| Kasarani | 1.2 |
| Kibera | 6.9 |
| Makadara | 4 |
| Pumwani | 2.7 |
| Socio-economic status | |
| High | 27.1 |
| Medium | 62.1 |
| Low | 10.8 |