Table 3.
Mutually adjusted multivariable associations between risk factors for medicinal and non-medicinal poisoning
| Risk factors | Medicinal poisoning, adjusted odds ratios (95% CI) | Non-medicinal poisoning, adjusted odds ratios (95% CI) |
|---|---|---|
| Child characteristics | ||
| Sex of child | ||
| Female | 1.00 | 1.00 |
| Male | 1.04 (0.93 to 1.17) | 1.04 (0.85 to 1.25) |
| Age of child, months | ||
| 0–12 | 1.00 | 1.00 |
| 13–24 | 6.34 (5.09 to 7.90) | 5.44 (4.07 to 7.26) |
| 25–36 | 9.61 (7.73 to 11.95) | 5.07 (3.73 to 6.90) |
| ≥37 | 3.35 (2.65 to 4.23) | 1.14 (0.78 to 1.66) |
| Birth order of child | ||
| 1st | 1.00 | 1.00 |
| 2nd | 1.45 (1.26 to 1.66) | 1.34 (1.06 to 1.69) |
| 3rd | 1.67 (1.27 to 2.20) | 2.64 (1.71 to 4.08) |
| Test for trend P<0.001 | Test for trend P<0.001 | |
| Maternal characteristics | ||
| Maternal age at child’s birth, years | ||
| <20 | 1.00 | 1.00 |
| 20–29 | 0.72 (0.57 to 0.91) | 0.62 (0.42 to 0.90) |
| 30–39 | 0.53 (0.41 to 0.67) | 0.44 (0.29 to 0.65) |
| ≥40 | 0.70 (0.45 to 1.08) | 0.23 (0.09 to 0.62) |
| Test for trend P<0.001 | Test for trend P<0.001 | |
| Perinatal depression | ||
| No | 1.00 | – |
| Yes | 1.54 (1.26 to 1.88) | – |
| Maternal alcohol misuse | ||
| Never | 1.00 | – |
| ≤1 year before injury | 5.44 (1.99 to 14.91) | – |
| ≥1 year before injury | 1.60 (0.77 to 3.32) | – |
| Social characteristics | ||
| Townsend index (quintiles) | ||
| 1 (least deprived) | 1.00 | 1.00 |
| 2 | 0.93 (0.76 to 1.13) | 0.96 (0.68 to 1.35) |
| 3 | 1.18 (0.96 to 1.43) | 1.23 (0.89 to 1.71) |
| 4 | 1.24 (1.01 to 1.52) | 1.36 (0.97 to 1.90) |
| 5 (most deprived | 1.40 (1.13 to 1.74) | 1.60 (1.12 to 2.29) |
| Missing | 0.89 (0.59 to 1.34) | 0.95 (0.48 to 1.89) |
| Test for trend P<0.001 | Test for trend P = 0.001 | |
| Family composition | ||
| Single adult | 1.00 | – |
| Two adults | 0.85 (0.74 to 0.96) | – |
| Other | 0.71 (0.56 to 0.92) | – |