Risk of maltreatment allegation associated with mother's perinatal mental health contact and diagnostic groups
| Characteristic | Bivariate HR (95% CI) | Multivariable HR (95% CI) |
|---|---|---|
| Gender | ||
| Male | reference group | reference group |
| Female | 1.12 (1.08 to 1.15) | 1.13 (1.08 to 1.17) |
| Marital status | ||
| Married | reference group | reference group |
| Never married | 4.59 (4.41 to 4.77) | 1.76 (1.65 to 1.88) |
| Divorced/separated | 4.46 (4.04 to 4.93) | 2.97 (2.61 to 3.37) |
| Aboriginality | ||
| Non-Aboriginal | reference group | reference group |
| Aboriginal | 5.43 (5.16 to 5.71) | 1.71 (1.57 to 1.87) |
| Maternal age at birth, years | ||
| <20 | 7.66 (7.21 to 8.14) | 2.68 (2.41 to 2.99) |
| 20–29 | 2.36 (2.25 to 2.47) | 1.63 (1.52 to 1.74) |
| 30–39 | reference group | reference group |
| >39 | 1.25 (1.07 to 1.45) | 1.11 (0.93 to 1.33) |
| Paternal age at birth, years | ||
| <20 | 7.54 (6.91 to 8.23) | 1.40 (1.24 to 1.59) |
| 20–29 | 2.42 (2.31 to 2.54) | 1.31 (1.23 to 1.39) |
| 30–39 | reference group | reference group |
| >39 | 1.34 (1.23 to 1.46) | 1.48 (1.35 to 1.63) |
| Socioeconomic disadvantage | ||
| 1—low | reference group | reference group |
| 2 | 1.66 (1.42 to 1.94) | 1.41 (1.20 to 1.66) |
| 3 | 2.40 (2.08 to 2.77) | 1.77 (1.52 to 2.07) |
| 4 | 4.02 (3.50 to 4.63) | 2.56 (2.20 to 2.97) |
| 5 | 6.22 (5.40 to 7.16) | 3.24 (2.78 to 3.77) |
| 6—high | 11.80 (10.25 to 13.59) | 4.64 (3.97 to 5.42) |
| Child disability | ||
| No | reference group | reference group |
| Yes | 1.73 (1.64 to 1.83) | 1.65 (1.54 to 1.77) |
| Mother assault admission | ||
| No | reference group | reference group |
| Yes | 7.20 (6.75 to 7.67) | 2.32 (2.08 to 2.57) |
| Housing codes | ||
| No | reference group | reference group |
| Yes | 4.10 (3.67 to 4.59) | 1.31 (1.12 to 1.55) |
| Mental health contact | ||
| No | reference group | reference group |
| Yes | 5.05 (4.82 to 5.29) | 3.16 (2.97 to 3.36) |
| Diagnostic groups* | ||
| Organic disorders | ||
| No | reference group | reference group |
| Yes | 4.94 (3.09 to 7.89) | 4.11 (2.26 to 7.48) |
| Substance-related disorders | ||
| No | reference group | reference group |
| Yes | 12.74 (11.10 to 14.64) | 2.08 (1.63 to 2.65) |
| Schizophrenia, affective and non-affective psychoses | ||
| No | reference group | reference group |
| Yes | 4.63 (4.16 to 5.15) | 3.26 (2.83 to 3.75) |
| Depression not elsewhere classified and neurotic disorders | ||
| No | reference group | reference group |
| Yes | 2.86 (2.61 to 3.13) | 1.99 (1.76 to 2.24) |
| Adjustment and stress-related disorders | ||
| No | reference group | reference group |
| Yes | 3.37 (3.05 to 3.73) | 1.89 (1.63 to 2.18) |
| Disorders of childhood/psychological development | ||
| No | reference group | reference group |
| Yes | 9.53 (6.17 to 14.72) | 4.71 (2.47 to 9.00) |
| Personality disorders | ||
| No | reference group | reference group |
| Yes | 11.63 (9.77 to 13.85) | 3.76 (2.86 to 4.95) |
| Intellectual disability | ||
| No | reference group | reference group |
| Yes | 18.16 (13.17 to 25.04) | 11.77 (6.74 to 20.55) |
| Other mental disorders | ||
| No | reference group | reference group |
| Yes | 1.60 (1.25 to 2.03) | 1.32 (0.97 to 1.81) |
*Diagnostic groups were conducted in a separate analysis with all other risk factors in the table except ‘mental health contact’. All estimates remained relatively unchanged in the diagnostic group analysis.