Table 2.
Time to progression to more advanced CKD stage among participants in the Chronic Renal Insufficiency Cohort study, according to initial CKD stage
| Stage of CKDa | Median Time [IQR] or N |
|---|---|
| Stage 3a | |
| Entered CKD stage 3a | 1437 |
| Transitioned to stage 3b | 624 |
| Median time spent in each stage, yr | 7.9 [2.3 to >12b] |
| Stage 3b | |
| Entered CKD stage 3b | 2160 |
| Transitioned to stage 4 | 1095 |
| Median time spent in each stage, yr | 5.0 [1.8–11.5] |
| Stage 4 | |
| Entered CKD stage 4 | 1703 |
| Transitioned to stage 5 | 742 |
| Median time spent in each stage, yr | 4.2 [2.4–6.6] |
| Stage 5 | |
| Entered CKD stage 5 | 741 |
| Transitioned to ESKD | 655 |
| Median time spent in each stage, yr | 0.8 [0.3–1.6] |
IQR, interquartile range.
a
Stage 2: eGFR= 60 to <90 ml/min per 1.73 m2; stage 3a: eGFR= 45 to <60 ml/min per 1.73 m2; stage 3b: eGFR= 30 to <45 ml/min per 1.73 m2; stage 4: eGFR= 15 to <30 ml/min per 1.73 m2; stage 5: eGFR<15 ml/min per 1.73 m2.
b
Follow-up time censored at 12 yr.