Trend of determinants of birth interval dynamics in Bangladesh

Khan, Jahidur Rahman; Bari, Wasimul; Latif, A. H. M. Mahbub

doi:10.1186/s12889-016-3577-9

Table 4 Estimates of the parameters and corresponding standard errors of the parametric PH model (Model I) and parametric frailty models (Model II–III) for birth interval of Bangladesh (BDHS 2004-2011)

From: Trend of determinants of birth interval dynamics in Bangladesh

Covariates	Model I		Model II		Model III
	\(\hat {\beta }\)	se	\(\hat {\beta }\)	se	\(\hat {\beta }\)	se
Mother’s age at first birth
Linear	0.055^a	0.017	0.214^a	0.028	0.125^a	0.018
Squared	−0.002^a	0.001	−0.006^a	0.001	−0.004^a	0.001
Parity	−0.031^a	0.008	−0.156^a	0.010	−0.052^a	0.008
Family composition
(Boy)	0.186^a	0.025	0.157^a	0.029	0.167^a	0.025
(Girl)	0.246^a	0.025	0.249^a	0.029	0.243^a	0.025
(Boy, Girl)
(Boy, Boy)	0.001	0.031	-0.062	0.038	-0.005	0.032
(Girl, Girl)	0.149^a	0.031	0.085^b	0.037	0.140^a	0.031
(>2 children)	0.032	0.028	0.016	0.032	0.040	0.028
Survival Status
Dead
Alive	−0.667^a	0.021	−0.927^a	0.027	−0.717^a	0.022
Mother’s Education
No education	0.282^a	0.041	0.468^a	0.055	0.295^a	0.042
Primary	0.265^a	0.040	0.367^a	0.054	0.283^a	0.042
Secondary	0.072^c	0.040	0.081	0.052	0.091^b	0.041
Higher
Wealth quintile
Poorest
Poorer	−0.093^a	0.018	−0.116^a	0.028	−0.084^a	0.019
Middle	−0.183^a	0.020	−0.220^a	0.029	−0.169^a	0.021
Richer	−0.278^a	0.021	−0.315^a	0.031	−0.266^a	0.023
Richest	−0.432^a	0.025	−0.470^a	0.036	−0.428^a	0.027
Residence
Urban
Rural	0.071^a	0.016	0.100^a	0.023	0.071^a	0.020
Division
Barisal
Chittagong	0.326^a	0.023	0.396^a	0.034	0.364^a	0.033
Dhaka	0.029	0.024	0.046	0.035	0.062^c	0.035
Khulna	−0.269^a	0.028	−0.346^a	0.040	−0.251^a	0.039
Rajshahi	−0.205^a	0.024	−0.252^a	0.035	−0.173^a	0.036
Sylhet	0.462^a	0.024	0.634^a	0.037	0.501^a	0.039
Year of survey	−0.078^a	0.016	−0.079^a	0.022	−0.080^a	0.016
Mother’s age at first birth × Year of survey	0.002^a	0.001	0.002^c	0.001	0.002^a	0.001
Family composition × Year of survey
(Boy) × Year	0.030^a	0.008	0.041^a	0.009	0.034^a	0.008
(Girl) × Year	0.028^a	0.008	0.047^a	0.009	0.034^a	0.008
(Boy, Boy) × Year	0.005	0.010	0.003	0.012	0.006	0.011
(Girl, Girl) × Year	0.012	0.010	0.029^b	0.012	0.017^c	0.010
(>2 children) × Year	0.001	0.007	-0.0003	0.009	0.001	0.007
Survival Status × Year of survey
Alive × Year	−0.023^a	0.007	−0.037^a	0.009	−0.026^a	0.008
Variance of random effects
Community					0.055
Mother			0.411
Kendall’s tau, τ			0.170		0.027
Baseline hazard
Scale	0.0001		0.0001		0.0001
Shape	2.085		2.565		2.142
Log-likelihood	-114958		-113790		-114677

^ap-Value <0.01; ^bp-Value <0.05; ^cp-Value <0.10

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