Table 3.
Comparison of functional outcome between vitamin D-sufficient group (group 1) and vitamin D-deficient group (group 2)
| Variable | Group 1 (n = 44) | Group 2 (n = 176) |
p value* w/o control |
p value† w control |
|---|---|---|---|---|
| Preoperatively | ||||
| VAS score | 61.3 (50–80) | 60.8 (50–80) | 0.734 | 0.612 |
| KSKS | 41.6 (15–62) | 39.7 (12–58) | 0.185 | 0.150 |
| KSFS | 70.8 (40–85) | 70.4 (32–82) | 0.863 | 0.695 |
| WOMAC score | 44.2 (36–68) | 42.3 (32–67) | 0.768 | 0.691 |
| Postoperative 1 year | ||||
| VAS score | 44.5 (20–50) | 44.5 (10–50) | 0.983 | 0.885 |
| KSKS | 92.1 (55–100) | 92.2 (45–100) | 0.948 | 0.941 |
| KSFS | 85.8 (50–100) | 88.4 (45–100) | 0.338 | 0.394 |
| WOMAC score | 8.2 (0–32) | 10.3 (0–47) | 0.287 | 0.286 |
Data for VAS score, KSKS, KSFS, and WOMAC score displayed as mean (range)
KSFS Knee Society Functional Score, KSKS Knee Society Knee Score, VAS Visual Analogue Scale, WOMAC Western Ontario and McMaster Universities Arthritis Index
*Comparison with two-sample t test without control of weight
†Comparison with analysis of covariance, as weights were assigned to covariate variable