Table 1 Baseline infant and maternal characteristics.

From: Weight change in the first 30 days among infants born less than 2000 grams in Guinea-Bissau and Uganda

 

Comparisons within primary cohort

Comparisons between cohorts

Guinea-Bissau

Uganda

Guinea-Bissau vs Uganda p-value

Primary cohort (< 2000 g at birth)

Secondary cohort (> 2000 g at birth)

Primary vs secondary p-value

Cohort size (Number)

60

60

 

120

420

 

Infant mortality by day 30, n (%)

10 (16.7)

6 (10.0)

0.283

16 (13.3)

2 (0.5)

 < 0.001

Infant characteristics

      

Male sex, n (%)

33 (55.0)

36 (60.0)

0.580

69 (57.5)

207 (49.3)

0.112

Cesarean delivery, n (%)

10 (16.7)

19 (31.7)

0.055

29 (24.2)

5 (1.2)

 < 0.001

Age (hours) at birth weight, median (IQR)

1.58 (1.10–3.50)

3.55 (3.00–4.38)

 < 0.001

3.00 (1.47–4.08)

3.09 (1.61–4.37)

0.417

Weight (g) at birth, mean (SD)

1727 (166.66)

1767 (159)

0.177

1747 (163)

3124 (422)

 < 0.001

Length (cm) at birth, mean (SD)

41.82 (1.73)

40.47 (2.49)

0.001

41.14 (2.24)

48.55 (2.11)

 < 0.001

MUAC (cm) at birth, mean (SD)

7.57 (0.53)

8.84 (0.96)

 < 0.001

8.19 (1.00)

10.63 (0.93)

 < 0.001

Maternal characteristics

      

Age (years), mean (SD)

26.65 (6.84)

25.32 (6.11)

0.296

25.90 (6.44)

25.99 (5.37)

0.899

Weight (kg), mean (SD)*

59.2 (11.3)

58.5 (9.2)

0.726

58.9 (10.2)

62.4 (12.4)

0.008

Height (cm), mean (SD)*

158.4 (4.5)

157.5 (6.9)

0.453

158.0 (5.9)

158.4 (5.9)

0.463

BMI, mean (SD)*

23.55 (4.02)

23.53 (3.09)

0.972

23.54 (3.54)

24.66 (3.98)

0.010

BMI < 21, n (%)*

14 (29.8)

12 (22.6)

0.416

26 (26.0)

71 (18.1)

0.075

Married, n (%)

29 (61.7)

51 (86.4)

0.003

80 (75.5)

246 (60.6)

0.005

Education (years), mean (SD)

7.48 (4.37)

10.44 (2.78)

 < 0.001

9.14 (3.84)

7.61 (4.39)

0.001

  1. n, number; %, percent; IQR, interquartile range; SD, standard deviation; g, gram(s); kg, kilogram(s); cm, centimeter(s); MUAC, mid-upper arm circumference; BMI, body mass index.
  2. Note: Male vs female comparisons within primary cohort for infant weight, length, and MUAC were all non-significant.
  3. *Measured at 30 days postpartum to account for peripartum weight fluctuations.
  4. Bolded p-values are statistically significant.