Table 8 Parameter estimations and S.E for the models of P, NB, ZIP, ZINB
Parameters | P | NB | ZIP | ZINB | ||
|---|---|---|---|---|---|---|
Poisson | Logit | NegBinomal | Logit | |||
Estim. (S.E) | Estim. (S.E) | Estim. (S.E) | Estim. (S.E) | Estim. (S.E) | Estim. (S.E) | |
Intercept | 0.76058*** (0.18592) | 1.0383** (0.4298) | 1.2842** (0.2059540) | − 0.9996** (0.6643) | 1.27952** (0.2174236) | − 1.0171** (0.6739) |
Sign of pregnancy (reference-no) | ||||||
Sign1 | − 0.4377** (0.15539) | − 0.6216** (0.3823) | 0.22744** (0.1634150) | − 0.8967 (0.5979) | − 0.22983** (0.1723128) | 0.8985** (0.6052) |
Utilization of media (reference-no use of media) | ||||||
Media1 | − 0.3702*** (0.10100) | − 0.405** (0.1860) | 0.1195** (0.1126641) | − 0.5212 (0.2495) | − 0.121061** (0.1172531) | 0.5219** (0.2518) |
Mothers’ education (reference-no education) | ||||||
M.educ1 | 0.27931*** (0.10757) | 0.1077** (0.2229) | − 0.1297 (0.1311842) | 0.1314** (0.3061) | 0.131155* (0.1376872) | − 0.1288 (0.3096 |
Wealth index (reference-poor) | ||||||
WI2 | 0.2419* (0.12278) | 0.1775*** (0.2171) | 0.00085** (0.1415231) | − 0.3718** (0.2914) | 0.0009002** (0.1467337) | − 0.3731** (0.2943) |
WI3 | 0.5902*** (0.11172) | 0.6099** (0.2151) | 0.28494** (0.1284985) | − 0.6181** (0.2932) | 0.2865452** (0.134157) | − 0.6174** (0.2961) |
Area of residence (reference-urban) | ||||||
Resid2 | − 0.368*** (0.09945) | − 0.4145** (0.2005) | − 0.1652** (0.1112927) | 0.4702** (0.2758) | − 0.166245** (0.1163618) | 0.4707** (0.2787) |
Log-likelihood | − 645.4173 | − 543.7086 | − 508.8491 | − 508.6907 | ||
Dispersion | 2.6666 | 0.9009 | 1.1159 | 1.0991 | ||