Table 1 Relative risks and their 95 % confidence intervals for teenage pregnancy, low-birthweight and multiple births
Fatal child maltreatment (including missing valuesa) N | Vital statistics Person-year | RR | 95 % CI | Fatal child maltreatment (excluding missing values) N | Vital statistics Person-year | RR | 95 % CI | |
|---|---|---|---|---|---|---|---|---|
Age of pregnancy | (2005.1–2011.3)b | (2005.1–2011.3)b | ||||||
20– | 302 | 125,753,388 | 1 | Reference | 175 | 125,753,388 | 1 | Reference |
–19 | 60 | 1,942,624 | 12.9 | 9.7–17.0 | 60 | 1,942,624 | 22.2 | 16.6–29.8 |
Birthweight | (2003.7–2011.3)b | (2004.1–2011.3)b | ||||||
Non-low-birthweight | 389 | 146,784,459 | 1 | Reference | 163 | 136,849,333 | 1 | Reference |
Low-birthweight | 48 | 12,766,487 | 1.4 | 1.1–1.9 | 41 | 11,994,708 | 2.9 | 2.0–4.0 |
Plurality | (2003.7–2011.3)b | (2004.1–2011.3)b | ||||||
Per individual child | ||||||||
Singleton | 423 | 156,642,370 | 1 | Reference | 239 | 146,110,271 | 1 | Reference |
Multiple births | 14 | 2,908,576 | 1.8 | 1.0–3.0 | 12 | 2,733,769 | 2.7 | 1.5–4.8 |
Per family | ||||||||
Families with singleton(s) | 390 | 156,642,370 | 1 | Reference | 239 | 146,110,271 | 1 | Reference |
Families with multiples | 13 | 1,454,839 | 3.6 | 2.1–6.2 | 11 | 1,367,332 | 4.9 | 2.7–9.0 |