Table 2.
Number of Events, Total Follow-Up Time, Event Rate, Unadjusted Risk, and Adjusted Risk for the Composite Endpoint of Kidney Failure With Replacement Therapy and All-Cause Death, Kidney Failure With Replacement Therapy, and All-Cause Death
| Long-term Users |
Non-long-term Users |
||
|---|---|---|---|
| (N = 308) | (N = 308) | ||
| Composite endpoint | Number of events | 62 | 97 |
| Total follow-up time, patient-years | 198 | 230 | |
| Event rate per 1,000 patient-years | 312 (244-401) | 421 (345-514) | |
| Unadjusted hazard ratio | 0.74 (0.53-1.01), P = 0.06 | ||
| Adjusted hazard ratio | 0.69 (0.49-0.98), P = 0.04 | ||
| KFRT | Number of events | 37 | 56 |
| Total follow-up time, patient-years | 198 | 230 | |
| Event rate, per 1,000 patient-years | 186 (135-257) | 243 (187-316) | |
| Unadjusted subhazard ratio | 0.75 (0.50-1.14), P = 0.19 | ||
| Adjusted subhazard ratio | 1.13 (0.74-1.80), P = 0.59 | ||
| All-cause deaths | Number of events | 49 | 85 |
| Total follow-up time, patient-years | 421 | 442 | |
| Event rate, per 1,000 patient-years | 116 (88-154) | 192 (155-238) | |
| Unadjusted hazard ratio | 0.59 (0.41-0.84), P = 0.003 | ||
| Adjusted hazard ratio | 0.45 (0.31-0.66), P < 0.001 | ||
Note: Event rate was estimated by Poisson regression. 95% confidence intervals are provided in parentheses.
Abbreviations: KFRT, kidney failure with replacement therapy.