Table 1: Covariate distributions of, and SMDs comparing, those censored due to failing to initiate and the recent initiators before and after applying IPCW.
Regimen and covariate Those censored due to failing to initiate Recent initiators SMD before IPCW for failing to initiate SMD after IPCW for failing to initiate
N for “0-30 day” regimen 1198 56
Age (mean, s.d.) 73.2 (13.2) 72.2 (13.7) -0.078 -0.004
Female sex N (%) 478 (40%) 19 (34%) -0.124 -0.003
Renal failure N (%) 352 (29%) 16 (29%) -0.018 -0.053
N for “0-90 day” regimen 718 47
Age (mean, s.d.) 73.4 (13.1) 72.7 (13.0) -0.051 -0.006
Female sex N (%) 279 (39%) 20 (43%) 0.075 -0.020
Renal failure N (%) 195 (27%) 11 (23%) -0.086 0.015
N for “30-90 day” regimen* 839.0 54.9
Age (mean, s.d.) 73.3 (14.1) 72.5 (16.4) -0.053 -0.009
Female sex N (%) 323.3 (39%) 23.0 (42%) 0.070 -0.025
Renal failure N (%) 231.9 (28%) 13.2 (24%) -0.082 0.020
S.D. = standard deviation, SMD = standardized mean difference. IPCW=inverse probability of remaining uncensored weights. *Values for the “30-90 day” regimen were calculated using the cumulative IPCW for initiating on day 0 to 29.