| Excluding diagnosis within two yearsa | Excluding diagnosis within three yearsa | Excluding diagnosis within four yearsa | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Events (%) | HR | (95% CI) | P | Events (%) | HR | (95% CI) | P | Events (%) | HR | (95% CI) | P | |
cDDD category | ||||||||||||
  < 28 | 1017 (7.4) | 1.00 |  |  | 861 (6.3) | 1.00 |  |  | 721 (5.3) | 1.00 |  |  |
 28–84 | 98 (7.6) | 1.00 | (0.82–1.22) | 0.995 | 92 (7.2) | 1.06 | (0.86–1.31) | 0.568 | 83 (6.5) | 1.15 | (0.92–1.43) | 0.223 |
 85–336 | 100 (9.8) | 1.30 | (1.07–1.59) | 0.009 | 90 (8.8) | 1.33 | (1.07–1.65) | 0.009 | 77 (7.5) | 1.36 | (1.08–1.71) | 0.008 |
  ≥ 337 | 54 (12.8) | 1.69 | (1.33–2.15) | < 0.001 | 50 (11.8) | 1.77 | (1.39–2.26) | < 0.001 | 44 (10.4) | 1.88 | (1.44–2.46) | < 0.001 |