Table 2 Live twin births, Australia, 2001-2010
From: Australian national birthweight percentiles by sex and gestational age for twins, 2001–2010
Infant characteristics | Number & percentage |
|---|---|
Total | 85,925 (100.0 %) |
Sex | |
Male | 43,153 (50.2 %) |
Female | 42,706 (49.7 %) |
Not stated | 66 (0.1 %) |
Birthweight (g) | |
< 1500 | 7461 (8.7 %) |
1500-2499 | 35,689 (41.5 %) |
2500-2999 | 30,403 (35.4 %) |
3000-3999 | 12,262 (14.3 %) |
> =4000 | 68 (0.1 %) |
Not stated | 42 (0.0 %) |
Gestational age (weeks) | |
20-27 | 2845 (3.3 %) |
28-31 | 5501 (6.4 %) |
32-36 | 37,745 (43.9 %) |
37-41 | 39,792 (46.3 %) |
> =42 | 26 (0.0 %) |
Not stated | 16 (0.0 %) |
Presentation | |
Vertex | 58,727 (68.3 %) |
Breech | 23,605 (27.5 %) |
Other | 2566 (3.0 %) |
Not stated | 1027 (1.2 %) |
Apgar score at 5 minutes | |
0-3 | 1124 (1.3 %) |
4-6 | 1810 (2.1 %) |
7-10 | 82,849 (96.4 %) |
Not stated | 142 (0.2 %) |
Resuscitation | |
Yes | 46,427 (54.0 %) |
No | 34,581 (40.2 %) |
Not stated | 4917 (5.7 %) |
Admission to NICU | |
Yes | 47,674 (58.6 %) |
No | 33,370 (41.0 %) |
Not stated | 278 (0.3 %) |
Length of stay | |
Less than 1 day | 2645 (3.1 %) |
1 day | 1502 (1.7 %) |
2 day | 2582 (3.0 %) |
3 day | 5102 (5.9 %) |
4 day | 9289 (10.8 %) |
5 day | 12,231 (14.2 %) |
6 day | 9704 (11.3 %) |
7-13 days | 21,520 (25.0 %) |
14-20 days | 9138 (10.6 %) |
21-27 days | 4858 (5.7 %) |
28 or more days | 7204 (8.4 %) |
Not stated | 150 (0.2 %) |