Table 4.

Factors associated with mean (±SD) haemoglobin levels among pregnant women in Munyenge Health Area.

Factors	Category	Mean (±SD) Hb levels	Test-value	Unadjusted P value	t-test	&Adjusted P value
Age (years)	≤20	8.6 ± 1.7	∗ F = 3.35	0.02	2.02	0.045
	21–25	9.1 ± 1.7
	26–30	9.0 ± 1.4
	>30	9.5 ± 1.5
Gravidity	Primigravidity	8.9 ± 1.9	F = 0.75	0.474	NA	NA
	Secundigravidity	8.9 ± 1.4
	Multigravidity	9.1 ±1.5
Marital status	Single	8.5 ± 1.4	$ t = −2.70	0.007	1.79	0.075
	Married	9.2 ± 1.6
Educational level	Primary	9.3 ± 1.7	t = 2.42	0.016	−1.62	0.106
	Secondary	8.8 ± 1.5
Occupation	Housewife	9.6 ± 1.8	F = 10.16	<0.001	0.19	0.852
	Business	8.7 ± 1.3
	Student	8.0 ± 1.2
	Farmer	9.4 ± 1.7
Infection status	S. haematobium only	9.5 ± 1.6	F = 31.61	<0.001	−1.22	0.225
	P. falciparum only	9.1 ± 1.2
	Coinfection	7.0 ± 1.0
	No infection	9.5 ± 1.4
IPTp-SP uptake	Yes	9.2 ± 1.6	t = 2.95	0.004	−2.60	0.01
	No	8.6 ± 1.5

^∗Analysis of variance test (ANOVA).

^$Student's t-test.

^&Adjusted P values using multilinear regression analysis.

NA: not applicable: variables with P > 0.2 in bivariate analysis were not included in regression analysis.