Neonatal and maternal outcomes for adolescent women
| n | Crude OR (95% CI) | aOR (95% CI)* | |
| Neonatal outcomes | |||
| Low birth weight (<2500 g) | 4332 | 0.99 (0.73 to 1.33) | 1.10 (0.81 to 1.50) |
| Very low birth weight (<1500 g) | 3972 | 1.54 (0.74 to 3.21) | 1.59 (0.74 to 3.42) |
| Extremely low birth weight (<1000 g) | 3943 | 3.69 (1.34 to 10.20) | 4.13 (1.41 to 12.11) |
| Macrosomia (birth weight >4000 g) | 4185 | 0.97 (0.67 to 1.40) | 0.78 (0.54 to 1.14) |
| Small for gestational age | 4104 | 0.83 (0.65 to 1.07) | 1.05 (0.81 to 1.37) |
| Large for gestational age | 3934 | 0.85 (0.64 to 1.13) | 0.74 (0.55 to 0.99) |
| Preterm delivery (<37 weeks) | 4591 | 1.16 (0.83 to 1.62) | 1.10 (0.78 to 1.56) |
| Very preterm delivery (<32 weeks) | 4358 | 2.14 (1.10 to 4.14) | 2.12 (1.06 to 4.25) |
| Extremely preterm delivery (<28 weeks) | 4320 | 4.99 (1.34 to 18.62) | 5.06 (1.23 to 20.78) |
| Stillborn | 4591 | 1.19 (0.46 to 3.11) | 1.39 (0.51 to 3.80) |
| Apgar score <7 at 1 min | 4591 | 1.02 (0.79 to 1.32) | 0.95 (0.73 to 1.25) |
| Apgar score <7 at 5 min | 4591 | 1.09 (0.70 to 1.70) | 1.11 (0.70 to 1.76) |
| Maternal outcomes | |||
| Pre-eclampsia | 4591 | 0.80 (0.49 to 1.30) | 0.84 (0.51 to 1.39) |
| Gestational diabetes | 4591 | 0.29 (0.17 to 0.51) | 0.35 (0.20 to 0.62) |
| Caesarean delivery | 4591 | 0.51 (0.40 to 0.64) | 0.53 (0.42 to 0.67) |
| Instrumental birth† | 3503 | 0.53 (0.41 to 0.69) | 0.53 (0.41 to 0.69) |
Reference group: maternal age 20–34 years.
*Adjusted for IMD score and ethnicity.
†Vaginal deliveries only, included both forceps and ventouse deliveries.
aOR, adjusted OR; IMD, Index of multiple deprivation.