| Study Arm | Baseline | 3 Months | 12 Months |
| PN Intervention (n = 180) | 0.49 (0.39, 0.59) | 0.53 (0.42, 0.63) | 0.49 (0.37, 0.61) |
| UC Controls (n = 176) | 0.52 (0.42, 0.62) | 0.37 (0.27, 0.47)* | 0.30 (0.21, 0.42)** |
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