Table 4.
Modelling of individual- and neighbourhood-level socio-environmental risk factors for all psychoses.
| Variable | Strata | All subjects: IRR (95% CI) |
Men: IRR (95% CI) |
Women: IRR (95% CI) |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Unadjusted | Full | LRT p | Unadjusted | Full | LRT p | Unadjusted | Full | LRT p | ||
| Individual-level variables | ||||||||||
| Age | 15–24 | 1 | 1 | 0.001 | 1 | 1 | 0.001 | 1 | 1 | 0.69 |
| 25–34 | 0.8 (0.5–1.1) | 0.8 (0.6–1.1) | 0.7 (0.4–1.0) | 0.7 (0.4–1.0) | 0.8 (0.5–1.5) | 1.0 (0.5–1.8) | ||||
| 35–44 | 0.5 (0.4–0.8) | 0.5 (0.6–0.8) | 0.4 (0.3–0.7) | 0.4 (0.3–0.7) | 0.7 (0.4–1.3) | 0.8 (0.4–1.4) | ||||
| 45–54 | 0.5 (0.3–0.8) | 0.5 (0.6–0.8) | 0.3 (0.2–0.6) | 0.3 (0.2–0.6) | 0.8 (0.4–1.5) | 0.9 (0.5–1.7) | ||||
| 55–64 | 0.4 (0.3–0.7) | 0.4 (0.3–0.7) | 0.4 (0.2–0.7) | 0.4 (0.2–0.7) | 0.5 (0.2–1.1) | 0.6 (0.3–1.3) | ||||
| 65–74 | 0.6 (0.4–1.0) | 0.6 (0.4–1.0) | 0.4 (0.2–0.8) | 0.4 (0.2–0.8) | 1.0 (0.5–2.0) | 1.0 (0.5–1.9) | ||||
| 75 + | 0.9 (0.5–1.3) | 0.9 (0.6–1.4) | 0.8 (0.4–1.5) | 0.8 (0.4–1.5) | 1.1 (0.6–2.2) | 1.1 (0.6–2.1) | ||||
| Sex | Women vs men | 0.8 (0.6, 1.0) | 0.8 (0.6, 1.0) | 0.08 | – | – | – | – | ||
| Neighbourhood-level variables | ||||||||||
| SFI | 1 SD change | 1.10 (1.01–1.20) | – | 0.60 | 1.04 (0.92–1.17) | – | 0.61 | 1.17 (1.04–1.32) | – | 0.39 |
| Deprivation | 1 SD change | 1.13 (1.03–1.24) | 1.12 (1.03–1.23) | 0.01 | 1.10 (0.97–1.25) | – | 0.16 | 1.18 (1.03–1.36) | 1.16 (1.01–1.32) | 0.05 |
| URC3 | Rural | 1 | – | 0.86 | 1 | – | 0.94 | 1 | – | 0.76 |
| Village | 1.07 (0.74–1.54) | – | 0.97 (0.59–1.60) | – | 1.13 (0.66–1.94) | – | ||||
| Town | 1.19 (0.90–1.58) | – | 1.07 (0.73–1.58) | – | 1.36 (0.90–2.07) | – | ||||
| URC2 | Rural | 1 | – | 0.58 | 1 | – | 0.93 | 1 | – | 0.79 |
| Less rural | 1.15 (0.89–1.47) | – | 1.04 (0.74–1.45) | – | 1.28 (0.88–1.85) | – | ||||
IRR, incidence rate ratio (with 95% CI); LRT, likelihood ratio test; p value indicates whether a variable improved overall model fit. IRR not reported for variables that did not significantly improve the final model at the p < 0.05 threshold of significance.
SFI, social fragmentation index; URC, urban–rural classification; Deprivation, material deprivation index; SD, standard deviation.