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Table 2 Rates of exclusive breastfeeding at 5.25 months post-partum, stratified by maternal and infant (first-born, if multiple births) characteristics measured at delivery and two weeks post-partum, for 480 mothers with breastfeeding data

From: Exclusive breastfeeding among women taking HAART for PMTCT of HIV-1 in the Kisumu Breastfeeding Study

   

EBF at 5.25 mo. post-partum*

Variable (n = 480)

Category

Number (%)

KM rate (%)

95% CI (%)

p-value**

WHO clinical HIV disease stage at 2 weeks after delivery (n = 461)

Stage 1

410 (89%)

81.8

(77.7, 85.3)

0.66

 

Stage 2

24 (5%)

74.1

(51.1, 87.4)

 
 

Stage 3 or 4

26 (6%)

84.3

(63.3, 93.8)

 

Body mass index (BMI) at 2 weeks post-partum (n = 461)

15.00 – 18.49

38 (8%)

75.9

(58.8, 86.7)

0.79

 

18.50 – 24.99

365 (79%)

81.2

(76.8, 84.9)

 
 

25.00 – 29.99

47 (10%)

84.9

(70.9, 92.5)

 
 

30.00 – 45.00

11 (2%)

81.8

(44.7, 95.1)

 

Infant birth weight (g) <2500 (n = 476)

Yes

37 (8%)

80.6

(63.5, 90.3)

0.98

 

No

439 (92%)

80.5

(76.4, 83.9)

 

Infant sex

Male

260 (54%)

76.9

(71.3, 81.6)

0.04

 

Female

220 (46%)

84.5

(78.9, 88.7)

 

Location of delivery

Hospital

377 (79%)

80.2

(75.8, 83.9)

0.98

 

Other facility

21 (4%)

84.2

(58.7, 94.6)

 
 

Home

45 (9%)

79.5

(64.2, 88.8)

 
 

Other’s home

29 (6%)

82.1

(62.3, 92.1)

 
 

Other/unknown

8 (2%)

75.0

(31.5, 93.1)

 

Delivery method

Spontaneous vertex

369 (77%)

80.6

(76.1, 84.3)

0.26

 

Breech

6 (1%)

66.7

(19.5, 90.4)

 
 

Cesarean

34 (7%)

69.2

(50.2, 82.1)

 
 

Unknown

71 (15%)

85.7

(75.1, 92.1)

 

Time to breastfeeding initiation (n = 460)

<1 hour

283 (62%)

79.5

(74.2, 83.8)

0.07

 

1 – 6 hours

119 (26%)

77.5

(68.8, 84.1)

 
 

7 – 48 hours

58 (13%)

89.4

(77.9, 95.1)

 

Prelacteal feed (n = 472)

Yes

23 (5%)

78.0

(55.0, 90.2)

0.81

 

No

449 (95%)

80.1

(76.1, 83.6)

 
  1. *The Kaplan-Meier (KM) method was used to estimate the rates of EBF at 5.25 months (160 days) post-partum, stratified by maternal and infant (first-born, if multiple births) characteristics measured at delivery and two weeks post-partum. The 95% confidence intervals (CIs) were calculated using the Greenwood variance estimator on the log-log scale.
  2. **The p-value is for Cochran’s Q test of homogeneity at 5.25 months.