| Age, y | Original Index | PCA Score |
|---|---|---|
| 60-69 | 1.90 | 0.0820 |
| 70-74 | 1.84 | 0.0219 |
| 75-79 | 1.74 | −0.0254 |
| ≥80 | 1.43 | −0.1879 |
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