Table 3.
Risk of stillbirth, neonatal and perinatal death by birthweight (BW) classification for all births ≥ 33 weeks and term births.
| Stillbirth | All births1 | Stillbirths | Adjusted model2 | All term births1 | Term stillbirths | Adjusted model2 |
|---|---|---|---|---|---|---|
| N (%) | n (rate per 1000) | aOR [95% CI] | N (%) | n (rate per 1000)) | aOR [95% CI] | |
| SGA both | 92 559 (6.3) | 791 (8.5) | 6.7 [6.1; 7.3] | 85 035 (6.0) | 434 (5.1) | 5.9 [5.3; 6.6] |
| SGA international only | 2 188 (0.2) | 2 (0.9) | 1.1 [0.3; 4.3] | 2 163 (0.2) | 2 (0.9) | 1.8 [0.4; 7.3] |
| SGA national only | 50 245 (3.4) | 218 (4.3) | 3.1 [2.7; 3.6] | 45 744 (3.3) | 101 (2.2) | 2.2 [1.8; 2.8] |
| AGA both | 1 079 324 (73.2) | 1424 (1.3) | Reference | 1 033 397 (73.4) | 927 (0.9) | Reference |
| LGA national only | 13 885 (0.9) | 31 (2.2) | 2.2 [1.5; 3.1] | 10 745 (0.8) | 5 (0.5) | 0.8 [0.3; 1.8] |
| LGA international only | 79 251 (5.4) | 58 (0.7) | 0.5 [0.4; 0.6] | 79 216 (5.6) | 58 (0.7) | 0.7 [0.5; 0.9] |
| LGA both | 158 005 (10.7) | 196 (1.2) | 0.9 [0.8; 1.1] | 151 267 (10.8) | 148 (1.0) | 1.1 [0.9; 1.3] |
| Female | 716 647 (48.6) | 1 321 (1.8) | Reference | 685 846 (48.7) | 819 (1.2) | Reference |
| Male | 758 810 (51.4) | 1 399 (1.8) | 1.0 [0.9; 1.1] | 721 721 (51.3) | 856 (1.1) | 1.0 [0.9; 1.1] |
| Variance at country level | 0.06 [0.03; 0.14] | 0.08 [0.03; 0.20] | ||||
| Neonatal death | Live births1,3 | Neonatal deaths | Adjusted model2 | Term live births1 | Term neonatal deaths | Adjusted model2 |
|---|---|---|---|---|---|---|
| N (%) | n (rate per 1000) | aOR [95% CI] | N (%) | n (rate per 1000) | aOR [95% CI] | |
| SGA both | 64 082 (6.0) | 194 (3.0) | 5.4 [4.6; 6.4] | 58 881 (5.8) | 131 (2.2) | 5.0 [4.1; 6.1] |
| SGA international only | 2 186 (0.2) | 1 (0.5) | 1.3 [0.2; 9.6] | 2 161 (0.2) | 1 (0.5) | 1.5 [0.2; 11.2] |
| SGA national only | 39 271 (3.7) | 56 (1.4) | 2.2 [1.7; 2.9] | 35 850 (3.6) | 32 (0.9) | 1.7 [1.2; 2.5] |
| AGA both | 771 619 (72.8) | 452 (0.6) | Reference | 738 348 (73.0) | 343 (0.5) | Reference |
| LGA national only | 12 596 (1.2) | 9 (0.7) | 1.6 [0.8; 3.0] | 10 211 (1.0) | 1 (0.1) | 0.3 [0.0; 1.9] |
| LGA international only | 58 485 (5.5) | 22 (0.4) | 0.5 [0.4; 0.8] | 58 450 (5.8) | 22 (0.4) | 0.7 [0.5; 1.1] |
| LGA both | 112 046 (10.6) | 77 (0.7) | 1.1 [0.9; 1.5] | 107 365 (10.6) | 52 (0.5) | 1.0 [0.8; 1.4] |
| Female | 516 953 (48.8) | 372 (0.7) | Reference | 494 524 (48.9) | 272 (0.6) | Reference |
| Male | 543 332 (51.2) | 439 (0.8) | 1.1 [1.0; 1.3] | 516 742 (51.1) | 310 (0.6) | 1.1 [0.9; 1.3] |
| Variance at country level | 0.19 [0.07; 0.49] | 0.16 [0.06; 0.42] |
| Perinatal death | All births1,3 | Perinatal deaths | Adjusted model2 | All term births1 | Term perinatal deaths | Adjusted model2 |
|---|---|---|---|---|---|---|
| N (%) | n (rate per 1000)) | aOR[95% CI] | N (%) | n (rate per 1000) | aOR [95% CI] | |
| SGA both | 64 590 (6.1) | 702 (10.9) | 6.1 [5.6; 6.7] | 59 161 (5.8) | 411 (6.9) | 5.5 [4.9; 6.2] |
| SGA international only | 2 188 (0.2) | 3 (1.4) | 1.1 [0.4; 3.6] | 2 163 (0.2) | 3 (1.4) | 1.7 [0.6; 5.4] |
| SGA national only | 39 436 (3.7) | 221 (5.6) | 2.7 [2.3; 3.1] | 35 932 (3.6) | 114 (3.2) | 2.1 [1.7; 2.6] |
| AGA both | 772 613 (72.7) | 1446 (1.9) | Reference | 738 987 (73.0) | 982 (1.3) | Reference |
| LGA national only | 12 618 (1.2) | 31 (2.5) | 1.7 [1.2; 2.4] | 10 215 (1.0) | 5 (0.5) | 0.5 [0.2; 1.2] |
| LGA international only | 12 618 (5.5) | 72 (1.2) | 0.6 [0.4; 0.7] | 58 500 (5.8) | 72 (1.2) | 0.8 [0.6; 1.0] |
| LGA both | 112 174 (10.6) | 205 (1.8) | 1.0 [0.8; 1.1] | 107 461 (10.6) | 148 (1.4) | 1.0 [0.8; 1.2] |
| Female | 517 853 (48.8) | 1 272 (2.5) | Reference | 495 080 (48.9) | 828 (1.7) | Reference |
| Male | 544 301 (51.2) | 1 408 (2.6) | 1.1 [1.0; 1.2] | 517 339 (51.1) | 907 (1.8) | 1.1 [1.0; 1.2] |
| Variance at country level | 0.09 [0.04; 0.22] | 0.09 [0.04; 0.21] |
NOTE: (1) ≥ 33 to ≤42 completed weeks of gestation (2) Model adjusted on fetal sex and with a supplementary level for the country (3) Births with data on perinatal death.