Main results: link between SIA exposure and child/maternal health outcomes, stratified by region
| Model | Main dependent variables | Region | |||||
| North central | North east | North west | South east | South South | South west | ||
| Non-polio full immunisation status (full model) | EXP_CHI | 0.026* | −0.074‡ | −0.076† | 0.092 | 0.065 | −0.060 |
| (−0.004, 0.056) | (−0.106 to –0.042) | (−0.151 to –0.002) | (−0.035, 0.220) | (−0.042, 0.171) | (−0.144, 0.024) | ||
| Non-polio full immunisation status (EXPxAGE interaction model) | EXP_CHI | 0.054† | −0.058† | −0.034 | 0.238† | 0.171† | −0.019 |
| (0.009, 0.100) | (−0.104 to –0.013) | (−0.110, 0.042) | (0.056, 0.420) | (0.001, 0.341) | (−0.138, 0.101) | ||
| EXPxAGE | −0.001† | 0.000 | −0.001* | −0.005‡ | −0.003‡ | −0.002* | |
| (−0.002 to –0.000) | (−0.001, 0.001) | (−0.002, 0.000) | (−0.008 to –0.002) | (−0.006 to –0.001) | (−0.004, 0.000) | ||
| Delivery: at home | EXP_PREG | 0.003 | −0.025 | −0.015 | 0.036 | −0.023 | 0.055 |
| (−0.036, 0.042) | (−0.067, 0.017) | (−0.067, 0.037) | (−0.062, 0.135) | (−0.102, 0.056) | (−0.013, 0.122) | ||
| Delivery: at private facility | EXP_PREG | −0.015 | 0.024 | −0.059 | 0.020 | 0.038 | −0.003 |
| (−0.061, 0.031) | (−0.103, 0.151) | (−0.197, 0.080) | (−0.060, 0.099) | (−0.074, 0.150) | (−0.059, 0.052) | ||
| Delivery: at public facility | EXP_PREG | 0.002 | 0.018 | 0.025 | −0.049 | 0.014 | −0.033 |
| (−0.034, 0.038) | (−0.024, 0.060) | (−0.028, 0.078) | (−0.129, 0.030) | (−0.060, 0.088) | (−0.087, 0.022) | ||
| Antenatal care: no of antenatal care visits | EXP_PREG | 0.034 | 0.015 | 0.025 | 0.155† | 0.072 | −0.069 |
| (−0.030, 0.097) | (−0.026, 0.055) | (−0.005, 0.055) | (0.001, 0.308) | (−0.055, 0.198) | (−0.206, 0.069) | ||
| Antenatal care: no of tetanus injections | EXP_PREG | 0.003 | 0.001 | 0.002 | 0.010 | 0.037* | 0.034‡ |
| (−0.015, 0.021) | (−0.017, 0.019) | (−0.013, 0.017) | (−0.021, 0.042) | (−0.000, 0.074) | (0.009, 0.058) | ||
| Child survival (exposure decomposition) | EXP_PREG_nod (date approximation) | −0.019 | 0.019 | −0.008 | 0.036 | −0.056 | −0.021 |
| (−0.076, 0.037) | (−0.022, 0.060) | (−0.051, 0.035) | (−0.116, 0.189) | (−0.206, 0.094) | (−0.145, 0.102) | ||
| EXP_CHI_nod (date approximation) | 0.030* | 0.005 | 0.025 | −0.043 | −0.005 | 0.018 | |
| (−0.001, 0.061) | (−0.020, 0.029) | (−0.011, 0.060) | (−0.171, 0.085) | (−0.139, 0.128) | (−0.103, 0.139) | ||
| Child survival (total exposure) | EXP_TOT_nod (total exposure, date approximation) | 0.018 | 0.008 | 0.013 | −0.013 | −0.026 | −0.001 |
| (−0.008, 0.044) | (−0.013, 0.030) | (−0.019, 0.045) | (−0.126, 0.099) | (−0.142, 0.091) | (−0.103, 0.101) | ||
Notes. Two-level logistic regression with LGA random effect. Sample includes children up to 60 months of age (or aged 60 months at time of death) born between October 2000 and December 2017. Dependent variables as indicated in column ‘model,’ corresponding to aggregate results presented above. Main results only, omitting child, parental and household determinants of immunisation, survey round dummy, constant and multilevel variance parameter. Coefficients reported, 95% CIs in brackets.
*P<0.10.
†P<0.05.
‡P<0.01.
LGA, local government area; SIA, supplementary immunisation activity.