Table 2.

Mean scores and standard deviations on the illness management index (IMI) by categories of baseline maternal and infant characteristics for 466 rural Guatemalan women participating in a follow-up study in 1996–1999.

Baseline Characteristic	N	Mean ± SD	P value1
Scores on the Raven’s Progressive Matrices
missing	99	3.4 ± 1.2
< 13	104	3.2 ± 1.1
13–17	165	3.2 ± 1.2
> 17	98	3.4 ± 1.2	0.35
Formal schooling, y
missing	6	3.7 ± 1.8
< 1	85	3.3 ± 1.2
1 – < 3	127	3.1 ± 1.1
3–6	197	3.3 ± 1.2
>6	51	3.4 ± 1.3	0.20
Scores on a summary measure of maternal cognitive skills
missing	76	3.3 ± 1.3
<50.2	133	3.2 ± 1.2
50.2 – 76.1	128	3.1 ± 1.1
> 76.1	129	3.5 ± 1.2	0.02
Household socioeconomic status score
missing	45	3.0 ± 1.3
−3.0–(−0.55)	139	3.2 ± 1.1
−0.55–0.36	143	3.3 ± 1.2
0.36–3.0	139	3.4 ± 1.2	0.05
Maternal age at enrollment, y
missing	5	3.4 ± 1.8
<23	150	3.4 ± 1.2
23–28	159	3.1 ± 1.2
> 28	152	3.3 ± 1.2	0.37
Number of children in household at enrollment
missing	33	3.0 ± 1.4
<= 2	225	3.4 ± 1.2
> 2	208	3.2 ± 1.2	0.22
Household mean scores for a summary hygiene index
missing	3	3.3 ± 2.5
0 – < 6	148	3.2 ± 1.0
6–8	159	3.2 ± 1.3
>8–15	156	3.4 ± 1.1	0.33
Mother works outside of home
no	256	3.4 ± 1.2
yes	85	3.4 ± 1.1
missing	125	3.0 ± 1.2	0.53
Mother’s marital status
married/partnered	328	3.4 ± 1.2
single	12	3.3 ± 0.7
missing	126	3.0 ± 1.2	0.74
Infant Sex
Male	343	3.2 ± 1.3
Female	288	3.1 ± 1.3	0.62

¹From ANOVA