Table 2.
Weighted relative risks of all-cause hospitalization, ICU admission, and death in the exposed group relative to the reference group a, b.
| Observed Data (N = 206,248) | Weighted Data (N = 199,952) c | ||||
|---|---|---|---|---|---|
| Event d | Non-Exposed (N = 165,925) |
Exposed (N = 40,323) |
Non-Exposed (N = 160,897) |
Exposed (N = 39,055) |
Weighted IRR (95% CI) e |
| All-cause hospitalization | 55,268 (33.31) | 13,555 (33.62) | 53,758 (33.41) | 13,061 (33.44) | 1.00 (0.98 to 1.02) |
| All-cause ICU admission | 200 (0.12) | 66 (0.16) | 192 (0.12) | 63 (0.16) | 1.34 (1.01 to 1.79) |
| All-cause death | 66 (0.04) | 21 (0.05) | 65 (0.04) | 19 (0.05) | 1.21 (0.72 to 2.02) |
Abbreviations: ICU, intensive care unit; IRR, incidence risk ratio; inverse probability of treatment weighting, IPTW. a Clinical conditions were recorded after 24 months unless otherwise stated. b Results are reported as n (%) unless otherwise indicated. c IPTW on the propensity score was used to balance the groups for baseline health data. Seventy covariates were weighted (Table 1, Supplementary Tables S3 and S4). Individuals in the reference group were weighed using stabilized weights to produce a sample with the same distribution of covariates as the exposed group. d Events investigated after 24 months. e Calculated using modified Poisson regression.