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| Risk groups | HR | aHR |
|---|---|---|
| Low-risk group | Reference | Reference |
| Medium-risk group |
1.71
(95CI, 1.08, 2.71; p = 0.02) |
1.63
(95%CI, 1.03, 2.60; p = 0.04) |
| High-risk group |
5.53
(95CI, 3.41, 8.99; p<0.001) |
5.21
(95CI, 3.18, 8.53; p<0.001) |
