Table 1.
Patient characteristics in the CKD stage 3, 4, and 5 cohorts
| Characteristic | CKD stage 3 n = 215,553 |
CKD stage 4 n = 43,576 |
CKD stage 5 n = 11,407 |
|---|---|---|---|
| n (%) | n (%) | n (%) | |
| Age, mean (SD) | 72.61 (11.53) | 72.30 (12.64) | 65.34 (14.45) |
| Age group, yr | |||
| 18–40 | 3168 (1.47) | 1111 (2.55) | 756 (6.63) |
| 41–60 | 30,595 (14.19) | 6,625 (15.20) | 3,313 (29.04) |
| 61–70 | 50,920 (23.62) | 9221 (21.16) | 2945 (25.82) |
| 70–80 | 66,257 (30.74) | 12,571 (28.85) | 2533 (22.21) |
| ≥81 | 64,613 (29.98) | 14,048 (32.24) | 1860 (16.31) |
| Sex | |||
| Male | 109,441 (50.77) | 20,044 (46.00) | 5698 (49.95) |
| Female | 106,112 (49.23) | 23,532 (54.00) | 5709 (50.05) |
| Race | |||
| White | 181,398 (84.15) | 34,925 (80.15) | 7646 (67.03) |
| Black | 28,273 (13.12) | 6969 (15.99) | 3102 (27.19) |
| Other | 5882 (2.73) | 1682 (3.86) | 659 (5.78) |
| Hospitalization during 1-yr baseline | |||
| Yes | 91,261 (42.34) | 18,656 (42.81) | 4813 (42.19) |
| No | 124,292 (57.66) | 24,920 (57.19) | 6594 (57.81) |
| Comorbid conditions during 1-yr baseline | |||
| Atherosclerotic heart disease | 52,052 (24.15) | 11,307 (25.95) | 2579 (22.61) |
| Congestive heart failure | 45,244 (20.99) | 13,867 (31.82) | 3361 (29.46) |
| Cardiac arrhythmia | 55,115 (25.57) | 12,328 (28.29) | 2372 (20.79) |
| Cerebrovascular disease | 20,503 (9.51) | 4545 (10.43) | 1092 (9.57) |
| Peripheral vascular disease | 24,290 (11.27) | 6064 (13.92) | 1537 (13.47) |
| Chronic obstructive pulmonary disease | 42,170 (19.56) | 9321 (21.39) | 2122 (18.60) |
| Gastrointestinal bleeding | 5419 (2.51) | 1362 (3.13) | 428 (3.75) |
| Liver disease | 8603 (3.99) | 2103 (4.83) | 661 (5.79) |
| Cancer | 21,941 (10.18) | 4679 (10.74) | 1107 (9.70) |
| Diabetes | 81,238 (37.69) | 20,988 (48.16) | 6113 (53.59) |
| Hypertension | 147,639 (68.49) | 32,365 (74.27) | 9105 (79.82) |
| Dementia | 5908 (2.74) | 1189 (2.73) | 203 (1.78) |
| HIV | 687 (0.32) | 137 (0.31) | 74 (0.65) |
CKD, chronic kidney disease.