|  |  | Progress to RRT | Progress to death | ||
---|---|---|---|---|---|---|
CKD stage at consent | Number of patients | Follow-up years | Total number of patients progressing to RRT | Annual progression rate (%)a | Total number of patients’ death | Annual progression rate (%)a |
Patients aged <75Â years | ||||||
 CKD 2 | 110 | 279.5 | 1 | 0.4 | 2 | 0.72 |
 CKD 3 | 406 | 1087.9 | 8 | 0.7 | 28 | 2.57 |
 CKD 4 | 176 | 396.7 | 39 | 9.8 | 30 | 7.56 |
 CKD 5 | 45 | 47.9 | 31 | 64.7 | 3 | 6.26 |
Patients aged >/=75Â years | ||||||
 CKD 2 | 18 | 38.4 | 0 | 0.0 | 4 | 10.4 |
 CKD 3 | 218 | 537.3 | 1 | 0.2 | 29 | 5.4 |
 CKD 4 | 177 | 391.5 | 3 | 0.8 | 58 | 14.8 |
 CKD 5 | 25 | 28.3 | 3 | 10.6 | 14 | 49.5 |