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| Group | R | P |
|---|---|---|
| PTC (unadjusted) | 0.19 | 0.17 |
| PTC (adjusted) | 0.46 | 0.00 |
| NG (unadjusted) | 0.24 | 0.07 |
| NG (adjusted) | 0.49 | 0.00 |
| Control (unadjusted) | −0.06 | 0.66 |
| Control (adjusted) | 0.53 | 0.00 |
