Sensitivity analysis, varying the definition of long-bone fractures
| Variable | Long-bone fractures: Broadest definition of long-bone fracture used for the main analysis (n=2456) | Sensitivity analysis 1: Excluding greenstick fractures (n=2095) | Sensitivity analysis 2: Definition of long-bone fractures restricted to the most specific Read codes (n=1878) |
|---|---|---|---|
| Adjusted OR (95% CI) | Adjusted OR (95% CI) | Adjusted OR (95% CI) | |
| Child variables | |||
| Sex of child | |||
| Female | 1.00 | 1.00 | 1.00 |
| Male | 0.99 (0.91 to 1.08) | 1.04 (0.95 to 1.14) | 1.04 (0.95 to 1.15) |
| Age of child | |||
| 0–12 months | 1.00 | 1.00 | 1.00 |
| 13–24 months | 4.09 (3.51 to 4.76) | 3.99 (3.39 to 4.70) | 4.13 (3.47 to 4.92) |
| 25–36 months | 4.82 (4.13 to 5.63) | 4.76 (4.03 to 5.62) | 4.90 (4.10 to 5.85) |
| 37+ months | 4.88 (4.21 to 5.66) | 4.76 (4.06 to 5.58) | 4.88 (4.12 to 5.78) |
| Birth order of child | |||
| 1st | 1.00 | 1.00 | 1.00 |
| 2nd | 1.52 (1.38 to 1.68) | 1.52 (1.37 to 1.69) | 1.50 (1.34 to 1.67) |
| 3rd | 1.94 (1.60 to 2.35) | 2.01 (1.64 to 2.47) | 1.93 (1.55 to 2.41) |
| 4th or more | 3.12 (2.08 to 4.68) | 3.19 (2.03 to 5.02) | 2.99 (1.83 to 4.88) |
| Maternal variables | |||
| Maternal age | |||
| <20 years | 1.31 (1.07 to 1.59) | 1.37 (1.11 to 1.69) | 1.38 (1.10 to 1.73) |
| 20–29 years | 1.10 (1.00 to 1.20) | 1.10 (1.00 to 1.22) | 1.10 (0.99 to 1.22) |
| 30+ years | 1.00 | 1.00 | 1.00 |
| Maternal alcohol misuse | |||
| No | 1.00 | 1.00 | 1.00 |
| Yes | 2.33 (1.13 to 4.82) | 2.39 (1.11 to 5.11) | 2.94 (1.34 to 6.46) |