Table 2.
Socio-economic and demographic factors associated with children ever-born in 2006 and 2011
| Variable | 2006 (n = 7243) | 2011 (n = 7364) | ||||||
|---|---|---|---|---|---|---|---|---|
| IRR | 95% CI | A(IRR) | A95%CI | IRR | 95% CI | A(IRR) | A95%CI | |
| Education level | ||||||||
| No education | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Primary | 0.89*** | 0.86–0.91 | 1.03 | 0.99–1.06 | 0.84*** | 0.82–0.87 | 0.96*** | 0.93–0.99 |
| Secondary + | 0.52*** | 0.49–0.55 | 0.70*** | 0.67–0.73 | 0.51*** | 0.48–0.53 | 0.67*** | 0.64–0.70 |
| Place of residence | ||||||||
| Urban | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Rural | 1.49*** | 1.42–1.57 | 1.28*** | 1.23–1.34 | 1.57*** | 1.51–1.64 | 1.36*** | 1.31–1.41 |
| Religion | ||||||||
| Catholic | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Protestant | 0.99 | 0.96–1.02 | 1.01 | 0.98–1.04 | 0.99 | 0.95–1.02 | 0.98 | 0.95–1.02 |
| Muslim | 0.99 | 0.95–1.04 | 1.02 | 0.98–1.07 | 0.98 | 0.93–1.03 | 0.99 | 0.95–1.04 |
| Other | 0.98 | 0.94–1.03 | 0.99 | 0.94–1.03 | 0.99 | 0.94–1.04 | 1.00 | 0.96–1.04 |
| Wealth quintile | ||||||||
| Poorest | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Poorer | 0.98 | 0.94–1.02 | 0.98 | 0.95–1.02 | 0.96 | 0.92–1.01 | 0.96*** | 0.92–1.00 |
| Middle | 0.98 | 0.94–1.02 | 0.98 | 0.94–1.02 | 0.95*** | 0.91–1.00 | 0.94*** | 0.90–0.98 |
| Richer | 0.97 | 0.93–1.01 | 0.99 | 0.95–1.02 | 0.93*** | 0.89–0.97 | 0.92*** | 0.88–0.96 |
| Richest | 0.68*** | 0.65–0.71 | 0.77*** | 0.74–0.80 | 0.63*** | 0.60–0.66 | 0.69*** | 0.66–0.72 |
| Sex of household head | ||||||||
| Male | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Female | 0.90*** | 0.87–0.93 | 1.04*** | 1.00–1.07 | 0.87 | 0.84–0.90 | 1.03 | 0.99–1.07 |
| Working status | ||||||||
| Not working | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Working | 1.28*** | 1.22–1.35 | 1.14*** | 1.09–1.19 | 1.17*** | 1.12–1.21 | 1.05*** | 1.01–1.08 |
| Polygamy | ||||||||
| No co-wife | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Has co-wife | 1.05*** | 1.02–1.08 | 0.99 | 0.94–0.99 | 1.08*** | 1.05–1.12 | 1.03 | 1.00–1.07 |
| Not sure | 0.69*** | 0.66–072 | 1.39*** | 1.30–1.49 | 0.70*** | 0.67–0.73 | 1.39*** | 1.30–1.49 |
| Exposure to family planning messages | ||||||||
| No | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Yes | 0.57*** | 0.50–0.65 | 0.64*** | 0.57–0.72 | 0.60*** | 0.55–0.66 | 0.66*** | 0.61–0.71 |
| Source of modern family planning methods | ||||||||
| Non user | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Government | 1.17*** | 1.12–1.22 | 1.06*** | 1.02–1.10 | 1.17 | 1.13–1.22 | 1.08*** | 1.04–1.12 |
| Private | 0.89*** | 0.85–0.93 | 0.98 | 0.94–1.02 | 0.95 | 0.91–1.00 | 0.99 | 0.95–1.03 |
| Knowledge of any family planning methods | ||||||||
| No knowledge | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Has knowledge | 0.98 | 0.93–1.04 | 1.09*** | 1.03–1.16 | 0.97 | 0.87–1.08 | 1.04 | 0.93–1.15 |
| Contraceptive use | ||||||||
| Not using | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Using | 1.03 | 0.99–1.06 | 1.01 | 0.99–1.04 | 1.06*** | 1.03–1.10 | 1.02 | 0.99–1.05 |
| Age at first sex | ||||||||
| < =14 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| 15–19 | 0.83*** | 0.81–0.86 | 0.85*** | 0.82–0.88 | 0.84*** | 0.81–0.88 | 0.88*** | 0.84–0.91 |
| 20+ | 0.62*** | 0.57–0.67 | 0.62*** | 0.58–0.66 | 0.54*** | 0.49–0.59 | 0.57*** | 0.52–0.62 |
| Don’t know | 0.99 | 0.95–1.03 | 0.90*** | 0.87–0.94 | 1.04 | 1.00–1.08 | 0.95*** | 0.91–0.99 |
| Family size preference | ||||||||
| 0–2 Children | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| 3–4 Children | 1.39*** | 1.27–1.53 | 1.26*** | 1.16–1.36 | 1.20*** | 1.09–1.31 | 1.12*** | 1.03–1.22 |
| 5+ Children | 2.01*** | 1.83–2.20 | 1.53*** | 1.42–1.65 | 1.77*** | 1.62–1.93 | 1.41*** | 1.307–1.53 |
| Age at first marriage | ||||||||
| Not yet married | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| < =14 | 6.40*** | 5.56–7.37 | 3.43*** | 2.94–4.01 | 7.67*** | 6.53–9.01 | 3.89*** | 3.26–4.64 |
| 15–19 | 5.48*** | 4.76–6.29 | 2.99*** | 2.56–3.49 | 6.22*** | 5.30–7.30 | 3.30*** | 2.78–3.93 |
| 20+ | 4.33*** | 3.75–4.99 | 2.26*** | 1.94–2.64 | 4.87*** | 4.14–5.73 | 2.50*** | 2.10–2.99 |
Note: IRR is Incident Rate Ratio. ***p < 0.05, AIRR: Adjusted IRR, A(95% CI):Adjusted 95% Confidence Interval. Results adjusted for marital status and current age of the women