Table 6 Infant demographic and birth-related characteristics by linkage group for liveborn singleton births, NSW 2001-2008
From: Investigating linkage rates among probabilistically linked birth and hospitalization records
Variable | Birth-hospital record linked groups | Unlinked groups | |||
|---|---|---|---|---|---|
| Â | Mothers and infants | Mothers only | Infants only | Birth records | Hospital records |
N = 667315 | N = 11312 | N = 9553 | N = 3017 | N = 13469 | |
n(%) | n(%) | n(%) | n(%) | n(%) | |
Sex | |||||
  Male | 343 655 (51.5) | 5 782 (51.1) | 4 851 (50.8) | 1 484 (49.2) | 6 867 (51.0) |
  Female | 323 261 (48.4) | 5 517 (48.8) | 4 698 (49.2) | 1 496 (49.6) | 6 599 (49.0) |
Birthweight < 1000 grams | 1 948 (0.3) | 118 (1.0) | 30 (0.3) | 16 (0.5) | 89 (0.7) |
Preterm birth | 35 776 (5.4) | 806 (7.1) | 621 (6.5) | 165 (5.5) | 745 (5.5) |
Agpar1 < 4 | 12 642 (1.9) | 307 (2.7) | 198 (2.1) | 48 (1.6) | 186 (1.4) |
Admission to SCN/NICU | 100 498 (15.1) | 1 908 (16.9) | 1 534 (16.1) | 440 (14.6) | - (-) |
Death in hospital | 1 714 (0.3) | 125 (1.1) | 36 (0.4) | 21 (0.7) | 81 (0.6) |