Table 1 Description of the Population of Participants

Gender

 Female

 Male

43 (49.4%)

44 (50.6%)

35 (42.7%)

47 (57.3%)

45 (46.4%)

52 (53.6%)

123 (46.2%)

143 (53.8%)

Age (in months)

 Mean (SD)

 Median [Min, Max]

 [Q1, Q3] (IQR)

92.4 (24.5)

96.0 [41.0, 126]

[79.0, 114] (34.5)

89.0 (22.2)

88.0 [42.0, 126]

[74.0, 110] (35.8)

84.2 (24.1)

88.0 [42.0, 125]

[62.0, 104] (42.0)

88.4 (23.8)

91.0 [41.0, 126]

[69.3, 110] (40.5)

Delivery Method

 Caesarean

 Vaginal

9 (10.3%)

78 (89.7%)

16 (19.5%)

66 (80.5%)

23 (23.7%)

74 (76.3%)

48 (18.0%)

218 (82.0%)

Premature Birth (gestational age < 36 weeks)

 No

84 (96.6%)

77 (93.9%)

94 (96.9%)

255 (95.9%)

 Yes

3 (3.4%)

5 (6.1%)

3 (3.1%)

11 (4.1%)

Birth weight (in kg)

 Mean (SD)

 Median [Min, Max]

 [Q1, Q3] (IQR)

 Missing

2.96 (0.584)

3.00 [0, 4.50]

[2.50, 3.30] (0.800)

6 (6.9%)

2.96 (0.664)

3.00 [1.15, 4.90]

[2.50, 3.40] (0.900)

0 (0%)

3.18 (0.537)

3.25 [1.50, 4.50]

[2.90, 3.50] (0.600)

0 (0%)

3.04 (0.601)

3.00 [0, 4.90]

[2.60, 3.50] (0.900)

6 (2.3%)

Did Child Breastfeed?

 No

 Yes

9 (10.3%)

78 (89.7%)

32 (39.0%)

50 (61.0%)

1 (1.0%)

96 (99.0%)

42 (15.8%)

224 (84.2%)

Duration of Breastfeeding (in months)

 Mean (SD)

 Median [Min, Max]

 [Q1, Q3] (IQR)

 Missing

12.4 (5.15)

14.0 [1.00, 24.0]

[9.50, 15.0] (5.50)

8 (9.2%)

7.65 (4.83)

6.00 [1.00, 24.0]

[6.00, 10.0] (4.00)

33 (40.2%)

14.4 (4.59)

15.0 [2.00, 28.0]

[12.0, 16.0] (4.00)

0 (0%)

12.2 (5.46)

14.0 [1.00, 28.0]

[6.00, 15.0] (9.00)

41 (15.4%)

Was Mother on ART during pregnancy?

 No

 Yes

77 (88.5%)

10 (11.5%)

13 (15.9%)

69 (84.1%)

NA

NA

90 (53.3%)

79 (46.7%)

Child’s Duration on ART (in months)

 Mean (SD)

 Median [Min, Max]

 [Q1, Q3] (IQR)

 Missing

56.9 (46.7)

55.0 [0, 175]

[5.00, 94.0] (89.0)

28 (32.2%)

97.2 (54.1)

103 [0, 200]

[72.0, 138] (66.0)

1(1.2%)

NA

NA

NA

97 (100%)

80.2 (54.7)

84.0 [0, 200]

[33.0, 120] (87.0)

126 (47.4%)

CD4 count (in cells/mm³)

 Mean (SD)

 Median [Min, Max]

 [Q1, Q3] (IQR)

729 (404)

640 [109, 2110]

[477, 864] (387)

904 (381)

817 [373, 2000]

[593, 1080] (490)

839 (312)

799 [34.0, 1830]

[631, 957] (326)

823 (371)

771[34.0, 2110]

[573, 1000] (428

CD4 count > 500 cells/mm³

 No

21 (24.1%)

4 (4.9%)

7 (7.2%)

32 (12.0%)

 Yes

66 (75.9%)

78 (95.1%)

90 (92.8%)

234 (88.0%)

Current weight (in kg)

 Mean (SD)

 Median [Min, Max]

 [Q1, Q3] (IQR)

22.1 (5.63)

22.0 [12.0, 39.0]

[17.5, 26.3] (8.75)

24.3 (7.91)

23.3 [13.0, 67.5]

[20.0, 27.4] (7.38)

24.1 (6.61)

23.0 [13.0, 44.0]

[18.5, 29.0] (10.5)

23.5 (6.80)

22.5 [12.0, 67.5]

[18.6, 27.9] (9.25)