Time to first birth and its predictors among reproductive-age women in Ethiopia: inverse Weibull gamma shared frailty model

Table 5 Parametric shared frailty model comparison on time to first birth data of reproductive age women in Ethiopia, 2016 EDHS

Model	Log-likelihood	DF	AIC	Variance of θ	LR test of θ = 0
Lognormal gamma	4511.66	34	− 8955.31	0.18	< 0.001
Lognormal inverse Gaussian	4511.62	34	− 8955.24	0.25	< 0.001
Log logistic gamma	4881.54	34	− 9695.08	0.23	< 0.001
Log logistic inverse Gaussian	4936.02	34	− 9804.03	0.87	< 0.001
Inverse Weibull gamma	5708.19	34	− 11,348.37	0.028	< 0.001^a
Inverse Weibull inverse Gaussian	5707.78	34	− 11,347.55	0.028	< 0.001

ISSN: 1472-6874