Predictors for the duration of breastfeeding among ethiopia women of childbearing age with babies; application of accelerate failure time and parametric shared frailty models

Table 6 Parametric estimates of Weibull -Gamma Frailty Model

Covariate	Estimate	Φ	95% CI for ϕ	SE	P-value
place of residence(Ref. = rural)
Urban	-0.04	0.96	[0.94,0.97]	0.001	0.001*
Women’s age(Ref. = 15–19)
19–24	0.01	1.010	[1.001, 1.05]	0.039	0.010*
25–29	0.02	1.020	[1.02, 1.40]	0.018	0.001*
30–34	0.25	1.284	[1.06, 1.41]	0.012	0.020*
35–39	0.03	1.030	[1.01, 1.55]	0.011	0.005*
40–44	0.04	1.041	[1.01, 1.22]	0.011	0.019*
Level of education(Ref. = secondary and above)
Non-educated	0.03	1.03	[1.00,1.06]	0.014	0.039*
Primary	0.12	1.13	[1.11,1.15]	0.011	0.000*
Wealth index(Ref. = Poor)
Middle	-0.03	0.97	[0.93,0.99]	0.012	0.022*
rich	-0.07	0.93	[0.91,0.95]	0.010	0.000*
Sex of child(Ref. = male)
Female	-0.02	0.98	[0.96,1.00]	0.009	0.091
Smoking status(Ref. = yes)
No	0.47	1.60	[1.57,1.63]	0.015	0.000*
child age	-0.01	0.99	[0.76, 0.99]	0.001	0.000*
birth interval(Ref. < 2 years)
< 2–3 years	0.02	1.02	[1.09, 1.25]	0.014	0.027*
> 3 years	0.25	1.28	[1.06,1.43]	0.006	0.000*

ISSN: 2055-0928