Table 4. Socioeconomic factors and vaccination status according to a log-binomial analysis, estimated prevalence ratios, and 95% confidence interval. Bom Jesus, Province of Luanda, Angola, 2010.

Variable	Total	n	%	PRraw	95%CI	PRadjusted	95%CIa
Area
Urban	266	83	31.2	1		1
Rural	943	357	37.9	1.21	0.97;1.51	1.19	0.95;1.47
Head of household’s salary (minimum wage equivalents)
≤ 5	954	345	36.2	1		1
> 5	255	95	37.2	1.03	0.84;1.25	0.97	0.80;1.19
Head of household’s education (years)
Illiterate	99	30	30.3	1		1
≤ 4	398	126	31.7	1.04	0.75;1.45	0.99	0.71;1.36
> 4	712	284	39.9	1.32	0.97;1.78	1.30	0.96;1.76
Owned house
Yes	938	347	37.0	1.08	0.88;1.31	1.09	0.90;1.33
No	271	93	34.3	1		1
Appliances
Radio	115	50	43.5	1.40	1.02;1.91	1.45	1.05;1.99
TV	273	85	31.1	1		1
Radio and TV	653	253	38.7	1.24	0.99;1.55	1.14	0.91;1.43
Radio, TV, and others	166	52	31.3	1.00	0.74;1.35	0.97	0.69;1.36
None	2	0		–		–
Water treatment method
Boiling	20	9	45.0	1.73	0.89;3.36	1.47	0.77;2.80
Chemical treatment	36	10	27.8	1.07	0.51;2.21	0.99	0.49;2.02
Never treat water	1,080	402	37.2	1.43	0.97;2.10	1.42	0.96;2.10
Sometimes treat water	73	19	26.0	1		1
Lighting
Public	772	287	37.2	1.07	0.84;1.36	1.03	0.77;1.37
Generator	209	73	34.9	1.01	0.74;1.36	0.91	0.65;1.27
Lamp	156	54	34.6	1		1
Others	72	26	36.1	1.04	0.70;1.55	0.99	0.68;1.45
Waste disposal
Public collection	109	50	45.9	1.97	1.11;3.48	2.26	1.26;4.07
Burning	43	10	23.3	1		1
Burying	242	100	41.3	1.78	1.02;3.09	1.99	1.12;3.54
Others	815	280	34.4	1.48	0.86;2.53	1.71	0.97;3.00

^a Adjusted for the other variables of the same level.