Table 1 Characteristics of Sibling Groups, 1987–2005
Variable | Hospital stay, 2 days or less n = 1445 | Hospital stay, more than 2 days n = 169 | Total | |||
|---|---|---|---|---|---|---|
Frequency | % | Frequency | % | Frequency | % | |
Birth order | ||||||
First | 544 | 37.6 | 69 | 40.8 | 613 | 38.0 |
Second | 515 | 35.6 | 51 | 30.2 | 566 | 35.1 |
Third | 249 | 17.2 | 29 | 17.2 | 278 | 17.2 |
Fourth or higher | 137 | 9.5 | 20 | 11.8 | 157 | 9.7 |
Age, Mean (SD) | 11.7 (4.97) | 9.2 (4.90) | 11.4 (5.01) | |||
Sex | ||||||
Male | 875 | 60.6 | 109 | 64.5 | 984 | 61.0 |
Female | 570 | 39.4 | 60 | 35.5 | 630 | 39.0 |
years | ||||||
1987–1992 | 225 | 15.6 | 39 | 23.1 | 264 | 16.4 |
1993–1998 | 388 | 26.9 | 76 | 45.0 | 464 | 28.7 |
1999–2005 | 832 | 57.6 | 54 | 32.0 | 886 | 54.9 |