Table 3 Perinatal status and pregnancy co-morbidities and complications in birthweight strata of all births
Birthweight (g) | |||||
|---|---|---|---|---|---|
< 1500 | 1500-2499 | 2500-3999 | ≥4000 | Total | |
Birth number (%) | 223 (0.4) | 1472 (2.5) | 49,268 (83.2) | 8227 (13.9) | 59,190 |
Males | 124 (55.6) | 718 (48.8) | 25,509 (51.8) | 5145 (62.5) | 31,496 (53.2) |
Gestational age (weeks)* | 30.3 ± 3.8 | 35.3 ± 2.8 | 39.1 ± 1.2 | 39.6 ± 1.0 | 39.1 ± 1.5 |
Birthweight (grams) | 1164 ± 217 | 2114 ± 267 | 3370 ± 333 | 4220 ± 281 | 3448 ± 507 |
Preterm birth* | 199 (89.2) | 951 (64.6) | 1231 (2.5) | 23 (0.3) | 2404 (4.1) |
Multi-births* | 66 (29.6) | 411 (27.9) | 770 (1.6) | 3 (0.04) | 1250 (2.1) |
Congenital anomaliesa* | 6 (2.7) | 43 (2.9) | 243 (0.5) | 32 (0.4) | 324 (0.5) |
Cesarean delivery* | 100 (44.8) | 891 (60.5) | 25,790 (52.3) | 5445 (66.2) | 32,226 (54.4) |
Pregnancy complications* | 52 (23.3) | 339 (23.0) | 6716 (13.6) | 1221 (14.8) | 8328 (14.1) |
HDP* | 40 (17.9) | 247 (16.8) | 2138 (4.3) | 495 (6.0) | 2920 (4.9) |
PROM* | 52 (23.3) | 290 (19.7) | 4262 (8.7) | 663 (8.1) | 5267 (8.9) |
GDM* | 4 (1.8) | 38 (2.6) | 650 (1.3) | 212 (2.6) | 904 (1.5) |
Anemia* | 32 (14.3) | 212 (14.4) | 3540 (7.2) | 700 (8.5) | 4484 (7.6) |
Antenatal steroidsf | 101 (57.7) | 448(48.5) | 292(24.6) | 3(13.6) | 844 (36.6) |
Maternal age (years) | 27.3 ± 5.4 | 27.0 ± 5.3 | 26.8 ± 4.8 | 27.7 ± 5.0 | 26.9 ± 4.8 |
Delayed childbearing* | 26 (11.7) | 147 (10.0) | 3841 (7.8) | 902 (11.0) | 4916 (8.3) |
> 9 years’ education* | 120 (53.8) | 658 (44.7) | 18,892 (38.3) | 3069 (37.3) | 22,739 (38.4) |
Amniotic fluid volume* | |||||
Normal | 193 (86.5) | 1263 (85.8) | 41,870 (85.0) | 7035 (85.5) | 50,361 (85.1) |
Polyhydramnios | 1 (0.4) | 28 (1.9) | 3443 (7.0) | 716 (8.7) | 4188 (7.1) |
Oligohydramnios | 30 (13.5) | 181 (12.3) | 3955 (8.0) | 476 (5.8) | 4642 (7.8) |
Amniotic contamination* | |||||
Normal | 192 (86.1) | 1326 (90.1) | 42,572 (86.4) | 6981 (84.9) | 51,071 (86.3) |
Grade I | 8 (3.6) | 50 (3.4) | 2413 (4.9) | 453 (5.5) | 2924 (4.9) |
GradeII | 6 (3.0) | 25 (1.7) | 1828 (3.7) | 363 (4.4) | 2222 (3.8) |
Grade III | 17 (7.6) | 71 (4.8) | 2455 (5.0) | 430 (5.2) | 2973 (5.0) |
Apgar score* | |||||
1-min ≤7 | 167 (74.9) | 365 (24.8) | 914 (1.9) | 125 (1.5) | 1571 (2.7) |
1-min ≤3 | 69 (30.9) | 97 (6.6) | 160 (0.3) | 21 (0.3) | 347 (0.6) |
5-min ≤7 | 112 (50.2) | 141 (9.6) | 259 (0.5) | 42 (0.5) | 554 (0.9) |
5-min ≤3 | 52 (23.3) | 71 (4.8) | 139 (0.3) | 31 (0.4) | 293 (0.5) |
Hospitalized on day 1* | 154 (69.1) | 864 (58.7) | 1971 (4.0) | 275 (3.3) | 3264 (5.5) |
IVH/PVH* | 70 (40.5) | 418 (44.9) | 388 (19.2) | 35 (12.6) | 911 (26.8) |
RDS* | 104 (61.1) | 106 (11.4) | 60 (3.0) | 2 (0.7) | 272 (8.0) |
Ventilation* | 119 (68.8) | 263 (28.3) | 245 (12.1) | 26 (9.4) | 653 (19.2) |
Fetal deaths/stillbirths* | 35 (15.7) | 61 (4.1) | 61 (0.1) | 10 (0.1) | 167 (0.3) |
Deaths at birthb | 52 (23.3) | 66 (4.5) | 70 (0.1) | 10 (0.1) | 198 (0.3) |
Early neonatal deathsc* | 36 (16.1) | 26 (1.8) | 71 (0.1) | 6 (0.1) | 139 (0.2) |
Late neonatal deathsd | 6 (2.7) | 9 (0.6) | 20 (0.04) | 6 (0.1) | 41 (0.1) |
All deathse | 82 (36.8) | 97 (6.6) | 157 (0.3) | 22 (0.3) | 358 (0.6) |