Appendix Table 9.
Pooled (crude) and common IRR after stratification by the year of enrollment
Pooled IRR | Common IRR* | Mantel Haenzsel test of homogeneity p-value |
|
---|---|---|---|
Depression | |||
All participants | 0.48 (0.34, 0.67) | 0.54 (0.34, 0.84) | 0.24 |
Excluding baseline
depressed |
0.37 (0.20, 0.67) | 0.36 (0.20, 0.67) | 0.37 |
Suicidal ideation | |||
All participants | 0.42 (0.22, 0.76) | 0.40 (0.16, 1.03) | 0.122 |
Excluding baseline
suicidal |
0.41 (0.19, 0.82) | 0.35 (0.11, 1.09) | 0.27 |
IRR = incidence rate ratio
The common IRR was produced by combining Mantel Haenzsel-weighted stratum-specific IRRs (the strata combined were the three strata for year of enrollment)