. 2018 Jan 8;18:116. doi: 10.1186/s12889-017-5009-x

Table 2.

Relationship between child factors, maternal factors, household factors, community factors and birth registrations, Lao PDR (n = 9576)

		Birth registration
Independent factors		Yes		No		P^a
		n	(%)	n	(%)	P^a
Child factors
Child sex
	Male	3580	73.7	1276	26.3	0.174
	Female	3537	74.9	1183	25.1
Child age^b (months)
	0–11	1222	60.4	796	39.4	<0.001
	12–23	1406	74.0	494	26.0
	24–35	1410	76.4	436	23.6
	36–47	1589	80.7	379	19.3
	48–59	1490	80.8	354	19.2
Maternal factors
Maternal age^b (years)
	15–19	443	65.4	234	34.6	<0.001
	20–29	4041	74.5	1386	25.5
	30–39	2179	76.1	686	23.9
	40–49	454	74.8	153	25.2
Marital status
	Never	30	71.4	12	28.6	0.667
	Married	7083	74.3	2447	25.7
	Divorced	2	100.0	0	0.0
	Widowed	2	100.0	0	0.0
Maternal educational attainment^b
	No education	2229	66.3	1131	33.7	<0.001
	Primary	2969	75.1	982	24.9
	Secondary	1738	83.9	334	16.1
	Higher	181	93.8	12	6.2
Ever given birth
	Yes	7105	74.3	2458	25.7	0.137
	No	12	92.3	1	7.7
Ever experienced loss of a child^b
	Yes	1703	69.2	759	30.8	<0.001
	No	5414	76.1	1700	23.9
Household factors
Father’s educational attainment^b
	No education	1015	66.6	510	33.4	<0.001
	Primary	3094	71.1	1257	28.9
	Secondary	2575	79.6	658	20.4
	Higher	433	92.7	34	7.3
Ethnicity of HHH^b
	Lao	2911	83.2	588	16.8	<0.001
	Khmu	1056	79.8	268	20.2
	Khmer	764	57.1	575	42.9
	Other	2386	69.9	1028	30.1
Ethno-linguistics of HHH^b
	Lao-Thai	3472	81.1	808	18.9	<0.001
	Mon-Khmer	2482	73.9	878	26.1
	Hmong-Mien	805	57.6	593	42.4
	Chinese-Tibetan	358	66.5	180	33.5
Religion of HHH^b
	Buddhist	3576	81.4	815	18.6	<0.001
	Animist	3447	68.1	1616	31.9
	Other	94	77.0	28	23.0
Wealth index quintiles^b
	Poorest	2186	66.9	1079	33.1	<0.001
	2nd quintile	1546	69.4	683	30.6
	3rd quintile	1336	77.7	384	22.3
	4th quintile	1077	81.7	241	18.3
	Wealthiest	972	93.1	72	6.9
Community factors
Region^b
	North	2558	67.2	1249	32.8	<0.001
	Central	2569	80.4	627	19.6
	South	1990	77.3	583	22.7
Settlement^b
	Urban	1528	88.4	200	11.6	<0.001
	Rural w/ road	4926	72.8	1836	27.2
	Rural w/o road	663	61.0	423	39.0
Total		7117	74.3	2459	25.7

HHH: head of household

^aP-value was calculated for chi square tests (categorical variables)

^bCorrelation between the independent variable and birth registration/birth certificate is statistically significant at the 0.05 level, and the variable was included in further logistic regression analyses