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| Time as PDR | |
| Up to 2 years (N = 69) | 0.5±0.1 [0.3, 0.7] |
| Up to 3 years (N = 36) | 0.9±0.1 [0.7, 1.1] |
| Up to 5 years (N = 51) | 1.0±0.1 [0.8, 1.1] |
| Up to 6 years (N = 32) | 1.1±0.1 [0.8, 1.3] |
N indicates the sample size.
