Table 2.
Comparison of preoperative patient-perceived outcomes and clinical hip scores between patients with and without vitamin D insufficiency (groups set by each threshold)
| Dependent measure | Insufficiency threshold set at 20 ng/mL | Insufficiency threshold set at 30 ng/mL | ||||
|---|---|---|---|---|---|---|
| Insufficient group (n = 18) | Normal group (n = 42) | p value* | Insufficient group (n = 39) | Normal group (n = 21) | p value† | |
| QWB-7 total score (points) | 0.525 ± 0.05 | 0.531 ± 0.04 | 0.837 | 0.523 ± 0.04 | 0.538 ± 0.04 | 0.185 |
| SF-36 physical component summary score (points) | 21 ± 5 | 22 ± 4 | 0.841 | 22 ± 5 | 22 ± 6 | 0.757 |
| SF-36 mental component summary score (points) | 58 ± 9 | 60 ± 7 | 0.280 | 59 ± 8 | 60 ± 8 | 0.558 |
| WOMAC total score (points) | 57 ± 14 | 58 ± 15 | 0.480 | 59 ± 15 | 54 ± 19 | 0.306 |
| Harris hip score (points) | 40 ± 17 | 49 ± 15 | 0.316 | 43 ± 15 | 52 ± 15 | 0.035 |
| Merle d’Aubigné-Postel hip score (points) | 9 ± 3 | 11 ± 3 | 0.414 | 10 ± 3 | 12 ± 3 | 0.007 |
Values are expressed as mean ± SD; * multivariate analysis of covariance was used to adjust for BMI and compare the groups set using the 20-ng/mL cutoff; †independent t-tests were used to compare the groups set using the 30-ng/mL cutoff; QWB-7 = Quality of Well-Being Index.