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Table 1 Descriptive characteristics [mean (SD) or n (Proportion)]

From: Association between early childhood exposure to malaria and children’s pre-school development: evidence from the Zambia early childhood development project

Characteristics

Full sample

Rural

 

(N = 1 410)

(N = 749)

Child’s demographics

    

Male, n (%)

674

(47.8)

365

(48.7)

Age in months, mean (SD)

74.6

(4.11)

75.3

(4.27)

Father dead, n (%)

99

(7.02)

42

(5.61)

Mother dead, n (%)

27

(1.91)

10

(1.34)

Father and mother dead, n (%)

5

(0.35)

1

(0.13)

Household-level variables, mean (SD)

    

Highest educational attainment (years)

8.49

(3.62)

7.70

(3.62)

Household size

5.46

(1.93)

5.60

(1.91)

Wealth quintile

2.85

(1.41)

2.23

(1.25)

Number of younger siblings in household

0.68

(0.81)

0.70

(0.84)

Number of older siblings in household

2.00

(1.52)

2.07

(1.51)

Cluster-level variables, mean (SD)

    

Parasitemia (fraction of MIS 2006 slides positive)

0.14

(0.20)

0.22

(0.22)

Fraction of parents deceased

0.10

(0.09)

0.07

(0.07)

Average educational attainment

8.49

(2.33)

7.70

(2.25)

Average wealth quintile

2.85

(1.04)

2.23

(0.62)

Outcomes

    

Peabody Picture Vocabulary Test (z-score), mean (SD)

−0.01

(1.01)

−0.04

(1.15)

Task Orientation (z-score), mean (SD)

0.00

(1.00)

−0.18

(1.06)

Tactile Pattern Recognition (z-score), mean (SD)

0.03

(1.00)

0.06

(1.03)

Socio-emotional Development (principal component z-score), mean (SD)

−0.01

(1.00)

−0.03

(1.02)

Fine Motor Skills (z-score), mean (SD)

−0.04

(1.01)

−0.20

(1.07)

Weight in kilograms, mean (SD)

21.58

(9.06)

22.45

(11.52)

Height in centimeters, mean (SD)

117.06

(8.12)

116.70

(7.14)

Stunted, n (%)

160

(0.17)

88

(0.17)

Underweight, n (%)

116

(0.12)

54

(0.10)

Body Mass Index, mean (SD)

15.12

(3.11)

15.36

(3.83)