Characteristics of weighted sample population (NDHS 2003–2013)
| Variable | n=79 825 | Population % | % of ever terminated pregnancy | 95% CI | % of unintended pregnancy | 95% CI |
| Age (28.7±9.6) | ||||||
| 15–19 | 16 204 | 20.3 | 3.8 | 3.30 to 4.20 | 6.6 | 6.20 to 6.90 |
| 20–24 | 14 261 | 17.9 | 11.7 | 11.00 to 12.50 | 19.3 | 18.80 to 19.80 |
| 25–29 | 14 678 | 18.4 | 19.4 | 18.50 to 20.40 | 26.6 | 26.10 to 27.10 |
| 30–34 | 10 861 | 13.6 | 18.5 | 17.60 to 19.40 | 20.4 | 19.90 to 20.90 |
| 35–39 | 9370 | 11.7 | 18.0 | 17.10 to 19.00 | 15.0 | 14.60 to 15.50 |
| 40–44 | 7387 | 9.3 | 15.0 | 14.20 to 15.90 | 8.2 | 7.90 to 8.60 |
| 45–49 | 7064 | 8.8 | 13.5 | 12.70 to 14.40 | 3.8 | 3.60 to 4.00 |
| Region | ||||||
| North Central | 13 853 | 17.4 | 13.8 | 12.50 to 15.20 | 17.1 | 16.10 to 18.10 |
| North East | 14 240 | 17.8 | 24.2 | 22.30 to 26.20 | 21.3 | 19.90 to 22.90 |
| North West | 18 708 | 23.4 | 25.6 | 23.90 to 27.40 | 34.6 | 32.90 to 36.40 |
| South East | 9200 | 11.5 | 11.0 | 10.10 to 12.00 | 7.2 | 6.60 to 7.80 |
| South South | 11 793 | 14.8 | 14.1 | 12.90 to 15.40 | 8.8 | 8.20 to 9.50 |
| South West | 12 031 | 15.1 | 11.3 | 10.40 to 12.30 | 11.0 | 10.30 to 11.80 |
| Residency type | ||||||
| Urban | 29 046 | 36.4 | 35.2 | 33.20 to 37.20 | 28.2 | 26.60 to 29.90 |
| Rural | 50 779 | 63.6 | 64.8 | 62.80 to 66.80 | 71.8 | 70.10 to 73.40 |
| Educational level | ||||||
| No education | 29 925 | 37.5 | 44.5 | 42.70 to 46.30 | 54.5 | 53.00 to 56.00 |
| Primary | 15 343 | 19.2 | 22.6 | 21.50 to 23.80 | 20.3 | 19.50 to 21.20 |
| Secondary | 27 733 | 34.7 | 24.7 | 23.40 to 26.00 | 20.4 | 19.50 to 21.30 |
| Higher | 6824 | 8.5 | 8.2 | 7.40 to 9.00 | 4.7 | 4.40 to 5.10 |
| Religion | ||||||
| Christian | 39 422 | 49.4 | 43.4 | 41.30 to 45.50 | 32.8 | 31.30 to 34.40 |
| Islam | 35 379 | 44.3 | 46.0 | 43.90 to 48.10 | 58.3 | 56.60 to 60.00 |
| Other | 5024 | 6.3 | 10.6 | 9.20 to 12.10 | 8.9 | 8.00 to 9.80 |
| Employed | ||||||
| No | 30 154 | 37.8 | 24.4 | 23.10 to 25.70 | 32.0 | 30.90 to 33.20 |
| Yes | 49 671 | 62.2 | 75.6 | 74.30 to 76.90 | 68.0 | 66.80 to 69.10 |
| Sex of Household Head | ||||||
| Male | 65 843 | 82.5 | 86.2 | 85.20 to 87.10 | 90.8 | 90.30 to 91.30 |
| Female | 13 982 | 17.5 | 13.8 | 12.90 to 14.80 | 9.2 | 8.70 to 9.70 |
| Wealth status | ||||||
| Poorest | 15 331 | 19.2 | 21.4 | 19.80 to 23.10 | 26.4 | 24.80 to 28.00 |
| Poorer | 15 698 | 19.7 | 20.6 | 19.30 to 22.10 | 24.8 | 23.70 to 25.90 |
| Middle | 16 075 | 20.1 | 19.6 | 18.40 to 20.90 | 19.6 | 18.60 to 20.60 |
| Richer | 16 518 | 20.7 | 19.2 | 18.00 to 20.50 | 16.4 | 15.50 to 17.40 |
| Richest | 16 203 | 20.3 | 19.1 | 17.70 to 20.50 | 12.8 | 12.00 to 13.60 |
| Total child born | ||||||
| 1–2 | 17 149 | 21.5 | 21.7 | 20.70 to 22.80 | 33.2 | 32.60 to 33.90 |
| 3–4 | 15 246 | 19.1 | 23.3 | 22.30 to 24.40 | 27.8 | 27.30 to 28.40 |
| >4 | 47 430 | 59.4 | 54.9 | 53.70 to 56.20 | 38.9 | 38.30 to 39.60 |
| Currently use modern contraceptive methods | ||||||
| No | 71 576 | 89.7 | 95.1 | 94.70 to 95.50 | 97.0 | 96.80 to 97.10 |
| Yes | 8249 | 10.3 | 4.9 | 4.50 to 5.30 | 3.0 | 2.90 to 3.20 |
| Unmet need | ||||||
| No | 56 477 | 70.8 | 72.5 | 71.40 to 73.60 | 74.3 | 73.70 to 75.00 |
| Yes | 23 348 | 29.2 | 27.5 | 26.40 to 28.60 | 25.7 | 25.00 to 26.30 |
| Experience of domestic violence | ||||||
| No | 62 183 | 77.9 | 85.2 | 84.10 to 86.10 | 91.9 | 91.50 to 92.40 |
| Yes | 17 642 | 22.2 | 14.8 | 13.90 to 15.90 | 8.1 | 7.60 to 8.50 |
| Marital status | ||||||
| Currently married/living with partner | 56 385 | 70.5 | 88.3 | 86.1 to 90.0 | 78.8 | 76.7 to 81.3 |
| Not currently married | 23 568 | 29.5 | 11.7 | 8.9 to 13.4 | 21.2 | 18.8 to 23.5 |
NDHS, Nigeria Demographic and Health Survey.