Table 1.
Demographic characteristics of study subjects
| Site | Sample size | Term | Preterm | Male | Female | Gday at delivery | Gday at sampling | Maternal age (year) | Maternal height (cm) | Birth weight (g) |
| Bangladesh (AMANHI) | 506 | 253 (50%) | 253 (50%) | 239 (47%) | 267 (53%) | 260.7 (20) | 95.8 (23.1) | 23.6 (4.5) | 149.2 (5.6) | 2516.1 (495.2) |
| Bangladesh (GAPPS) | 258 | 172 (67%) | 86 (33%) | 132 (51%) | 126 (49%) | 267.8 (18.7) | 158.8 (4.7) | 23.9 (5.9) | 151.8 (5.5) | 2722.7 (581.1) |
| Bangladesh (MDIG) | 208 | 138 (66%) | 70 (34%) | 106 (51%) | 102 (49%) | 265.9 (14.2) | 143.9 (13.5) | 23.4 (4.5) | 151.4 (5.6) | 2664.2 (375.7) |
| Brazil (INTERBIO) | 389 | 344 (88%) | 45 (12%) | 212 (54%) | 177 (46%) | 270.4 (10.8) | 132.2 (53.9) | 28.5 (5.4) | 162.5 (6.4) | 3147.1 (464.3) |
| Kenya (INTERBIO) | 553 | 528 (96%) | 25 (4%) | 293 (53%) | 260 (47%) | 278.3 (11.1) | 112.5 (40.6) | 30.4 (4.1) | 161.8 (5.8) | 3267 (463.8) |
| Malawi (iLiNS-DYAD) | 1212 | 1126 (93%) | 86 (7%) | 587 (48%) | 625 (52%) | 276 (14.3) | 117.7 (14.9) | 25.2 (6.2) | 156.1 (5.7) | 2976.6 (449.5) |
| Pakistan (AMANHI) | 348 | 233 (67%) | 115 (33%) | 189 (54%) | 159 (46%) | 265.5 (16.5) | 95.1 (24.6) | 26.3 (5.1) | 154.8 (6.1) | 2684.4 (500.1) |
| Pakistan (INTERBIO) | 516 | 413 (80%) | 103 (20%) | 251 (49%) | 265 (51%) | 264.9 (13.5) | 103.5 (35.6) | 30.1 (4.6) | 158 (5.9) | 2876.5 (480.7) |
| South Africa (INTERBIO) | 352 | 299 (85%) | 53 (15%) | 181 (51%) | 171 (49%) | 269.4 (17.5) | 88.2 (19.6) | 30.2 (5.8) | 159 (6.9) | 2940.3 (588.8) |
| Tanzania (AMANHI) | 351 | 234 (67%) | 117 (33%) | 174 (50%) | 177 (50%) | 267.5 (19.6) | 99.1 (23.1) | 27.9 (6.6) | 155.2 (5.9) | 3111.9 (592.5) |
| Thailand (INTERBIO) | 514 | 485 (94%) | 29 (6%) | 266 (52%) | 248 (48%) | 275.6 (11.5) | 114.4 (37.1) | 26.2 (6.1) | 151.8 (5.1) | 2965.8 (457.3) |
| UK (INTERBIO) | 648 | 594 (92%) | 54 (8%) | 342 (53%) | 306 (47%) | 275.9 (14.6) | 89.9 (20.3) | 31.1 (4.8) | 165.3 (6.5) | 3301.1 (586) |
| UK (Liverpool) | 525 | 424 (81%) | 101 (19%) | 271 (52%) | 254 (48%) | 267 (21.7) | 140.8 (9.5) | 30.6 (4.9) | 164.8 (6.3) | 3141.2 (730.3) |
| USA, California (CPPOP) | 966 | 484 (50%) | 482 (50%) | 505 (52%) | 461 (48%) | 249.8 (29.9) | 115.7 (7.7) | 30 (6.1) | 161.6 (7.3) | 2763.1 (923) |
| USA, North Carolina (NEST) | 657 | 438 (67%) | 219 (33%) | 363 (55%) | 294 (45%) | 263.1 (22.5) | 161.1 (90.5) | 28.3 (6.1) | 162.8 (7.7) | 2999.6 (750.4) |
| Vietnam (PBB) | 970 | 651 (67%) | 319 (33%) | 495 (51%) | 475 (49%) | 264.4 (18.9) | 149 (6.2) | 29.1 (4.6) | 156 (4.8) | 2959.9 (613.5) |
| Zambia (GAPPS) | 973 | 853 (88%) | 120 (12%) | 478 (49%) | 495 (51%) | 271.6 (18.2) | 137.3 (27.2) | 27.7 (5.8) | 160.4 (6.5) | 3008.7 (591.7) |
| All | 9946 | 7669 (77.1%) | 2277 (22.9%) | 5084 (51.1%) | 4862 (48.9%) | 267.8 (20.2) | 122.1 (39.9) | 28 (5.9) | 158.5 (7.6) | 2967.4 (637.4) |