Table 3. Contributing factors to the inequalities in accessing institution delivery in Tanzania DHS, 2004–2016.

Variable	2004		2010		2016
	Contribution	Percentage Contribution	Contribution	Percentage Contribution	Contribution	Percentage Contribution
Maternal age (ref. 15–19)
20–24	-0.00013773	-0.07	0.00008686	0.04	0.00017952	0.10
25–29	-0.00186078	-0.95	-0.00087544	-0.42	-0.00165373	-0.95
30–34	-0.00040123	-0.21	-0.00116987	-0.56	-0.00174259	-1.00
35–39	0.00091594	0.47	0.00340514	1.62	0.00018299	0.10
40–44	0.00193968	0.99	0.00037526	0.18	0.00235923	1.35
45–49	0.00137132	0.70	0.00104978	0.50	0.00070268	0.40
Wealth index (ref. Poorest)
Poor	-0.00579961	-2.97	-0.0035634	-1.69	-0.00870222	-4.97
Middle	0.00160743	0.82	0.00532474	2.53	0.00489504	2.80
Rich	0.02826501	14.50	0.03996438	18.98	0.03899178	22.29
Richest	0.09062864	46.49	0.08469064	40.22	0.07745086	44.28
Residence (ref. Rural)
Urban	0.05168552	26.51	0.03880018	18.43	0.01717197	9.82
Maternal education (ref. None)
Primary	0.01017321	5.22	0.00682989	3.24	-0.00098961	-0.57
Secondary	0.00841181	4.31	0.01640126	7.79	0.02704991	15.46
Higher	0.00575481	2.95	0.0010946	0.52	0.00305603	1.75
Marital status (ref. without a spouse)
Living with spouse	0.00049764	0.26	0.00025359	0.12	0.0002194	0.13
Employment (ref. Not employed)
Employed	0.00074625	0.38	0.00772848	3.67	0.00696007	3.98
Region-effects	0.00029422	0.15	-0.00090969	-0.43	0.00413894	2.37
Residual	0.00086737	0.44	0.0110658	5.26	0.00465383	2.66