Risk of self-inflicted injury (self-harm or suicide) and injury inflicted by others (assault or homicide), comparing 327 279 immigrant women and 942 502 nonimmigrant women who gave birth in Ontario during the study period
Variable | Self-inflicted injury | Injury inflicted by others | ||||
---|---|---|---|---|---|---|
No. with the outcome (rate per 1000 births) | Crude RR (95% CI) | Adjusted RR* (95% CI) | No. with the outcome (rate per 1000 births) | Crude RR (95% CI) | Adjusted RR* (95% CI) | |
Nonimmigrant status | 1199 (1.27) | 1.00 (reference) | 1.00 (reference) | 2710 (2.88) | 1.00 (reference) | 1.00 (reference) |
Immigrant status | 240 (0.73) | 0.58 (0.50–0.67) | 0.91 (0.78–1.04) | 360 (1.10) | 0.38 (0.34–0.43) | 0.57 (0.51–0.64) |
Maternal age, yr | 0.86 (0.85–0.87) | 0.81 (0.80–0.81) | ||||
No. of previous births | 1.44 (1.39–1.51) | 1.64 (1.59–1.68) | ||||
Maternal income quintile | ||||||
1, 2 or 3 (lower) | 1.00 (reference) | 1.00 (reference) | ||||
4 or 5 (higher) | 0.86 (0.76–0.98) | 0.61 (0.56–0.68) | ||||
Resource utilization band | ||||||
1, 2 or 3 (lower) | 1.00 (reference) | 1.00 (reference) | ||||
4 or 5 (higher) | 0.88 (0.79–0.98) | 1.04 (0.96–1.12) | ||||
Prior maternal psychiatric diagnosis | ||||||
No | 1.00 (reference) | 1.00 (reference) | ||||
Yes | 7.01 (6.25–7.86) | 3.55 (3.26–3.86) |
Note: CI = confidence interval, RR = relative risk.
↵* Adjusted for maternal age, parity, income quintile, resource utilization band and prior maternal psychiatric diagnosis.