Table 1.
Sample description.
| Median age at first intercourse | |||||
|---|---|---|---|---|---|
| N = 60,611 | % | 2nd quartile | Median | 4th quartile | |
| YEAR | |||||
| 2008 | 28,502 | 47.0 | 14 | 16 | 20 |
| 2013 | 32,109 | 53.0 | 14 | 16 | 20 |
| AGE COHORTS (30.68, SD: 9) | |||||
| 15–19 | 6,139 | 10.1 | 14 | 15 | 16 |
| 20–24 | 10,659 | 17.6 | 15 | 16 | 19 |
| 25–29 | 12,763 | 21.1 | 15 | 18 | 20 |
| 30–34 | 9,658 | 15.9 | 14 | 16 | 21 |
| 35–39 | 8,443 | 13.9 | 15 | 16 | 21 |
| 40–44 | 6,553 | 10.8 | 14 | 16 | 21 |
| 45–49 | 6,397 | 10.6 | 14 | 16 | 20 |
| REGION | |||||
| North Central | 10,212 | 16.8 | 15 | 18 | 22 |
| North East | 11,350 | 18.7 | 14 | 15 | 18 |
| North West | 16,214 | 26.8 | 14 | 15 | 16 |
| South East | 6,233 | 10.3 | 16 | 19 | 23 |
| South-South | 8,299 | 13.7 | 15 | 18 | 20 |
| South West | 8,304 | 13.7 | 16 | 19 | 21 |
| RESIDENCY | |||||
| Urban | 20,060 | 33.1 | 15 | 18 | 21 |
| Rural | 40,552 | 66.9 | 14 | 15 | 19 |
| RELIGION | |||||
| Christian | 28,535 | 47.1 | 15 | 18 | 21 |
| Islam | 30,926 | 51.0 | 14 | 15 | 18 |
| Other | 1,151 | 1.9 | 14 | 16 | 20 |
| EDUCATION | |||||
| None | 26,594 | 43.9 | 14 | 15 | 16 |
| Primary | 12,003 | 19.8 | 15 | 16 | 20 |
| Secondary | 16,648 | 27.5 | 15 | 18 | 20 |
| Higher | 5,366 | 8.9 | 18 | 20 | 24 |
| WEALTH INDEX | |||||
| Poorest | 13,381 | 22.1 | 13 | 15 | 17 |
| Poorer | 12,921 | 21.3 | 13 | 15 | 18 |
| Middle | 11,780 | 19.4 | 13 | 16 | 18 |
| Richer | 11,568 | 19.1 | 13 | 16 | 19 |
| Richest | 10,961 | 18.1 | 14 | 18 | 21 |
NDHS 2003–2013.