Demographics and socioeconomic factors of infants tested by enrolment site
| Mbekweni, N=329 | Newman, N=346 | Total, N=675 | p Value | |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | ||
| Sex: male | 157 (47.7) | 197 (56.9) | 354 (52.4) | 0.032 |
| African black | 325 (98.8) | 3 (0.9) | 328 (48.6) | <0.001 |
| Maternal smoking | ||||
| Non-smoker | 100 (30.4) | 39 (11.3) | 139 (20.6) | <0.001 |
| Passive exposure | 167 (50.8) | 131 (37.9) | 298 (44.2) | |
| Smoker | 50 (15.2) | 168 (48.6) | 218 (32.3) | |
| Unknown | 12 (3.7) | 8 (2.3) | 20 (2.9) | |
| Household air pollution | ||||
| High benzene | 141 (42.9) | 129 (37.3) | 270 (40.0) | 0.262 |
| Socioeconomic status | ||||
| Low | 127 (38.6) | 64 (18.5) | 191 (28.3) | <0.001 |
| Low moderate | 84 (25.5) | 82 (23.7) | 166 (24.6) | |
| Moderate high | 63 (19.2) | 89 (25.7) | 152 (22.5) | |
| High | 55 (16.7) | 110 (31.8) | 165 (24.4) | |
| Breast feeding | ||||
| Exclusive | 133 (40.4) | 163 (47.1) | 296 (43.9) | <0.001 |
| Mixed | 129 (39.2) | 173 (50.0) | 302 (44.7) | |
| None | 67 (20.4) | 10 (2.9) | 77 (11.4) | |
| Maternal recurrent respiratory symptoms/low lung function | 25 (7.6) | 31 (8.9) | 56 (8.3) | 0.522 |
| Maternal HIV infected | 120 (36.5) | 9 (2.6) | 129 (19.1) | <0.001 |
| Maternal stress high | 62 (18.8) | 71 (20.5) | 133 (19.7) | 0.727 |
| Maternal alcohol, high risk | 8 (2.4) | 21 (6.1) | 29 (4.3) | 0.066 |
| Previous LRTI | 12 (3.6) | 23 (6.6) | 35 (5.1) | 0.077 |
LRTI, lower respiratory tract infection.