Time to first antenatal care visit among pregnant women in Ethiopia: secondary analysis of EDHS 2016; application of AFT shared frailty models

Table 6 Weibull Inverse Gaussian shared frailty model results

Variable	Coef.	SE	Φ	95% CI for ϕ	P-value
Residence
Rural	0.175	0.063	1.191	[1.073, 1.322]	0.001
Marital Status
Married	−0.209	0.121	0.811	[0.606, 1.087]	0.161
Mother occupation
Yes	−0.042	0.034	0.959	[0.895, 1.027]	0.232
Wanted pregnancy
Latter	0.066	0.049	1.069	[0.976, 1.169]	0.150
No more	0.192	0.103	1.212	[1.026, 1.431]	0.670
Media exposure
Yes	−0.077	0.037	0.926	[0.856, 1.09]	0.005
Sex of household
Female	−0.028	0.041	0.972	[0.895, 1.056]	0.503
Religion
Muslim	−0.029	0.045	0.971	[0.888, 1.063]	0.527
Protestant	0.052	0.063	1.053	[0.937, 1.184]	0.383
Other	−0.172	0.114	0.842	[0.645, 1.099]	0.206
Wealth index
Middle	−0.174	0.044	0.840	[0.759, 0.931]	0.001
Rich	−0.139	0.044	0.870	[0.788, 0.961]	0.006
Mothers education
Primary	−0.077	0.040	0.926	[0.852, 1.007]	0.073
Secondary and above	−0.158	0.049	0.854	[0.762, 0.956]	0.006
Husband Occupation
Agriculture	0.039	0.067	1.040	[0.917, 1.180]	0.541
Non Agricultural	0.150	0.073	1.162	[1.027, 1.313]	0.017
Parity
4 and above	0.055	0.045	1.056	[0.971, 1.149]	0.204
Husband education level
Primary	−0.050	0.042	0.951	[0.872, 1.036]	0.251
Secondary and above	−0.183	0.044	0.833	[0.750, 0.925]	0.001
Person decided on respondent’s health care
Respondent alone and Husband/partner	0.062	0.045	1.064	[0.979, 1.156]	0.146
Respondent/partner and other person	0.071	0.061	1.074	[0.961, 1.200]	0.209
Theta ( )	0.180
P = 1.843, 1/p = 0.543, λ = 9.933, θ = 0.180, τ = 0.432

LR test of theta = 0: chibar2 (01) = 122.06, Prob > = chibar2 = 0.000
Coef coefficient of parameters, Std. Err. standard error of parameters, τ Kendall’s tau, ϕ acceleration factor, 95% CI 95% confidence interval for acceleration factor, P shape parameter, λ scale parameter, θ variance of the random effect, prob probability, chibar2 Chi-square

ISSN: 2049-3258