Incident rate ratios (and 95% CI) from the Poisson or negative binomial models of suicide in females resident in the North West Government Office Region at the local authority level
| Explanatory variable | Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | Linear model |
|---|---|---|---|---|---|
| *The result of the likelihood ratio test justifies dropping these explanatory variables from the model. | |||||
| Females, 10–29 years | |||||
| Income scale* | 1 | 1.14 (0.72 to 1.80) | 1.21 (0.60 to 2.43) | 0.29 (0.04 to 2.08) | 0.96 (0.75 to 1.24) |
| Employment scale* | 1 | 1.23 (0.79 to 1.93) | 1.15 (0.53 to 2.51) | 0.45 (0.06 to 3.28) | 1.03 (0.78 to 1.34) |
| Females, 30–49 years | |||||
| Income scale* | 1 | 0.70 (0.47 to 1.04) | 0.54 (0.27 to 1.07) | 0.43 (0.15 to 1.21) | 0.73 (0.58 to 0.92) |
| Employment scale | 1 | 0.66 (0.45 to 0.99) | 0.51 (0.24 to 1.09) | 0.33 (0.08 to 1.40) | 0.69 (0.53 to 0.89) |
| Females ⩾50 years | |||||
| Income scale* | 1 | 1.19 (0.89 to 1.58) | 0.79 (0.46 to 1.35) | 0.84 (0.43 to 1.65) | 0.97 (0.83 to 1.13) |
| Employment scale* | 1 | 1.13 (0.84 to 1.50) | 0.98 (0.58 to 1.63) | 0.81 (0.36 to 1.83) | 1.00 (0.84 to 1.17) |