Perinatal and sociodemographic characteristics of cohort children born in NSW between 2000 and 2010
| N=847 516 | ||
|---|---|---|
| Exposures | Children with RSV hospitalisation in the first 2 years of life | Children without any RSV hospitalisation in the first 2 years of life |
| n=31 831 | n=815 685 | |
| n (%) | ||
| Maternal age (years) | ||
| <20 | 2102 (6) | 32 088 (4) |
| 20–24 | 6342 (19) | 113 813 (14) |
| 25–29 | 9022 (28) | 227 139 (28) |
| 30–34 | 9081 (28) | 270 626 (33) |
| ≥35 | 5284 (17) | 172 019 (21) |
| Maternal smoking during pregnancy | 8178 (26) | 112 584 (14) |
| Multiparity of the mother | 23 211 (73) | 470 574 (58) |
| IRSAD | ||
| 1 (most disadvantaged) | 4032 (13) | 78 280 (10) |
| 2 | 4941 (15) | 101 577 (12) |
| 3 | 8405 (26) | 189 507 (23) |
| 4 | 7906 (25) | 208 681 (26) |
| 5 (most advantaged) | 6512 (20) | 239 566 (29) |
| Male sex of the baby | 18 799 (59) | 397 005 (49) |
| Season of birth | ||
| Summer | 8121 (26) | 195 652 (24) |
| Autumn | 10 470 (33) | 198 355 (24) |
| Winter | 7193 (23) | 207 579 (25) |
| Spring | 6047 (19) | 214 099 (26) |
| High-risk children | 4902 (15) | 60 637 (7) |
| Indigenous children | 2960 (9) | 26 732 (3) |
| Non-Indigenous standard risk children | 26 172 (82) | 741 025 (91) |
| Asthma hospitalisation beyond age of 2 years | 2405 (7.5) | 19 974 (2) |
IRSAD, Indices of Relative Socioeconomic Advantage and Disadvantage; NSW, New South Wales.