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Table 3 Parameter estimates in the Zero-inflated negative binomial regression model for childhood mortality among male partners

From: Prevalence and determinants of childhood mortality in Nigeria

Variable IRR Std.err 95% CI P
Age (years) 1.086 0.004 1.078–1.093 <0.001***
Region
 North Central (ref) 1    
 North East 1.125 0.092 0.958–1.322 0.152
 North West 1.358 0.112 1.156–1.597 <0.001***
 South East 0.870 0.128 0.651–1.160 0.342
 South South 1.240 0.140 0.993–1.548 0.057
 South West 0.751 0.096 0.585–0.964 0.024***
Residence
 Urban (ref) 1    
 Rural 1.335 0.087 1.174–1.518 <0.001***
Education
 No Education (ref) 1    
 Primary 1.074 0.051 0.979–1.179 0.131
 Secondary 0.962 0.058 0.855–1.083 0.520
 Tertiary 0.879 0.073 0.747–1.034 0.119
Wealth Index
 Poorest (ref) 1    
 Poorer 1.016 0.048 0.926–1.114 0.738
 Middle 0.967 0.062 0.853–1.096 0.601
 Richer 0.798 0.073 0.667–0.954 0.013***
 Richest 0.713 0.090 0.558–0.913 0.007***
Age at 1st birth (years) 0.973 0.003 0.968–0.979 <0.001***
Religion
 Christianity (ref) 1    
 Islam 1.059 0.115 0.856–1.311 0.596
 Traditionalist 1.531 0.169 1.232–1.901 <0.001***
Employment
 No (ref) 1    
 Yes 0.997 0.072 0.865–1.150 0.972
  1. ***Significant at p < 0.05; IRR = Incidence-rate ratios. Vuog test of ZINB vs standardized negative binomial z = 7.17; p < 0.001. McFadden Pseudo R2 = 0.309
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