Table 2.

Vitamin A coverage in children (12–23 months) by selected characteristics in 1999 and 2002

Characteristics	1999 Survey					2002 Survey
	n	N	%	95%CI	p valuea	n	N	%	95%CI	p valuea
VAS coverage
All districts	51	385	13.2	9.8–17.7		296	388	76.3	71.5–80.5
Sex
Male	27	188	14.4	9.8–20.5	0.53	161	205	78.5	71.8–93.9	0.28
Female	24	197	12.2	7.9–18.4		135	183	73.8	66.8–79.7
DPT vaccination
Vaccinated	37	280	13.2	9.5–18.1	0.97	229	296	77.4	71.6–82.3	0.34
Not vaccinated	14	105	13.3	7.6–22.3		66	91	72.5	63.2–80.2
Maternal education
No	10	129	7.8	4.2–13.8	0.02	70	100	70.0	60.2–78.3	0.08
Primary	37	243	15.2	11.2–20.3		218	280	77.9	72.4–82.5
Secondary	4	13	30.8	12.0–59.1		8	8	100.0	-
Knowledge of ≥2 danger signs
No	35	282	12.4	9.1–16.8	0.09	195	244	79.9	74.4–84.5	0.04
Yes	14	71	19.4	11.5–31.8		91	131	69.5	60.0–77.6
Socio-economic status
Poorest	5	60	8.3	3.7–17.8	0.64b	56	73	76.7	67.5–84.0	0.68b
Very Poor	10	56	17.9	9.6–30.9		59	77	76.6	65.5–85.0
Poor	9	80	11.3	5.7–21.1		49	70	70.0	56.7–80.6
Less Poor	10	73	13.7	6.7–26.0		65	82	79.3	68.7–86.9
Least Poor	12	81	14.8	8.1–25.5		58	74	78.4	67.6–86.3
District
Morogoro	12	79	15.2	8.2–26.5	0.85	73	95	76.8	66.9–84.5	0.94
Rufiji	13	99	13.1	6.6–24.3		81	108	75.0	65.3–82.7
Ulanga	16	111	14.4	8.4–23.6		89	114	78.1	69.3–84.9
Kilombero	10	96	10.4	5.5–18.9		53	71	74.6	61.6–84.4

^a Pearson chi-squared statistics corrected for survey design

^b P-level for F-test for linear trend in proportions, using logistic regression adjusting for clustering