Determinant of time-to-first birth interval after marriage among Ethiopian women

BMC Women's Health

Table 4 Results of log-normal gamma shared frailty model

Covariate	Category	Estimate(\( \hat{\beta} \))	SE(\( \hat{\beta} \))	ϕ	95% CI	P-value
Age		−0.08	0.0027	0.927	[0.922, 0.932]	0.000*
Place of	Rural	Ref.
Residence	Urban	0.26	0.0250	1.292	[1.231, 1.357]	0.000*
Employment	Unemployed	Ref.
Status	Employed	0. 08	0.0180	1.080	[1.042, 1.120]	0.000*
Contraceptive	Non- User	Ref.
Contraceptive	User	0.11	0.0206	1.116	[1.072, 1.162]	0.000*
Women	No education	Ref
Education	Primary	−0.19	0.0204	0.828	[0.796, 0.862]	0.000*
Education	Sec & above	−0.05	0.0395	0.956	[0.885, 1.033]	0.259
θ = 0.78	λ = 2.541				likelihood = − 813.8
τ = 0.28	ρ = 3.185				AIC = 13,641.69
Likelihood-ratio test of θ = 0: chi-square = 1307.52 P-value = 0.000*

ϕ Indicates Acceleration factor;* significant at 5% level; 95%CI: 95% confidence interval for acceleration factor; SE(\( \hat{\upbeta} \)): standard error for \( \hat{\upbeta} \); Ref. Reference

ISSN: 1472-6874