Table 3 Characteristics of child participants (n = 271)
Participant characteristics | All participants (n = 271) | AscarisIgE negative (n = 206) | AscarisIgE positive (n = 65) | TST negative (<10 mm, n = 64) | TST positive (≥10 mm, n = 107) |
|---|---|---|---|---|---|
Age (median, inter-quartile range(IQR)) | 4.4 (1.9 – 8.3)* §§ | 3.5 (1.6 – 6.7) | 6.6 (4.5 - 10.3) | 3.5 (1.6 – 5.7) | 6.1 (3.2 – 10.2) |
M.tb contact score (median (IQR)) | 4 (0 – 5)* §§ | 4 (1 – 6) | 3 (0 – 5) | 4 (0 – 5) | 5 (1 – 7) |
Male gender (%) | 111 (41.0) | 82 (39.8) | 29 (44.6) | 68 (41.5) | 43 (40.2) |
Ethnicity (%) | |||||
African | 55 (20.3) | 47 (22.8) | 8 (12.3) | 32 (19.5) | 23(21.5) |
Mixed ancestry | 216 (79.7) | 158 (76.7) | 57 (87.7) | 132 (80.5) | 84 (78.5) |
BCG history or scar present (%) | 221 (81.6) §§ | 172 (83.5) | 49 (75.4) | 143 (87.2) | 78 (74.3) |
Previous TB treatment (%) | 8 (3.0) §§ | 5 (2.4) | 3 (4.6) | 2 (1.2) | 6 (5.6) |
Current IPT (%) | 4 (1.5) | 3 (1.9) | 0 | 2 (1.2) | 2 (1.9) |
TST positive (%) | 107(39.5) | 83 (40.3) | 24(36.9) | NA | NA |
History of passing a worm in <3 months (%) | 21 (7.8) | 13 (6.3) | 7 (87.5) | 15 (9.2) | 6 (5.6) |
History of deworming in < 3 months3 (%) | 18 (6.6) | 11 (5.3) | 8 (12.3) | 13 (7.9) | 5 (4.7) |
Anthropometric data (mean (SD)) | |||||
Weight for age | −0.55 (1.20) | −0.49 (1.2) | −0.76 (1.3) | −0.48 (1.3) | −0.67 (1.1) |
Height for age | −1.29 (1.6) | −1.27 (1.6) | −1.34 (1.5) | −1.20 (1.9) | −1.42 (0.9) |
Weight for height | 0.35 (1.2) | 0.40 (1.2) | 0.13 (1.1) | 0.41 (1.2) | 0.22 (1.1) |
Socio-economic indicators and household demographics | |||||
Presence of a radio in household (%) | 217 (80.1) §§ | 163 (79.) | 54 (83.1) | 139 (84.8) | 78 (72.9) |
Presence of a refrigerator in household (%) | 221 (81.6) §§ | 166 (80.6) | 55 (84.6) | 144 (87.8) | 77 (72.0) |
Relying on the sale of household assets (%) | 13 (4.8) | 12 (5.8) | 1 (1.5) | 8 (4.9) | 5 (4.7) |
Flush toilet in the house (%) | 184 (67.9) | 141 (68.5) | 43 (66.2) | 114 (69.5) | 70 (65.4) |
Piped running water in residence (%) | 225 (83.0) | 169 (82.0) | 56 (86.2) | 137 (83.5) | 88 (82.2) |
Housing structure (%) | |||||
Tin shack | 36 (13.4) | 30 (14.6) | 6 (9.5) | 19 (1.7) | 17 (16.1) |
Brick | 205 (76.5) | 154 (75.1) | 51 (81.0) | 128 (78.5) | 77 (73.3) |
Other | 27 (10.1) | 21 (10.2) | 6 (9.5) | 16 (9.8) | 11 (10.5) |
Household composition (median (IQR)) | |||||
Number of adults | 5 (3 – 6) | 5 (3 – 6) | 4 (3 – 7) | 5 (3 – 6) | 4 (2 – 6) |
Number of children | 3 (2 – 5) | 3 (2 – 5) | 4 (2 – 5) | 4 (2 – 5) | 3 (2 – 4) |
Median ratio of adult:children | 1.25 (1 – 1.8) | 1.25 (1 – 1.8) | 1.25 (1–1.8) | 1.25 (1 – 1.9) | 1.25 (1 – 1.8) |