Table 4. Coefficient of Correlation Between Groups.
| Vitamin D | n | Vitamin D follow-up (mean ± SD) | HbA1c post-supplementation (mean ± SD) | Coefficient of correlation | P value |
|---|---|---|---|---|---|
| ≥ 20 and < 50 | 164 | 41.34 ± 5.35 | 7.95 ± 1.70 | -0.02 | 0.79 |
| ≥ 50 and < 75 | 288 | 62.94 ± 7.33 | 8.03 ± 1.84 | 0 | 0.97 |
| ≥ 75 | 548 | 101.5 ± 22.83 | 7.46 ± 1.39 | -0.1 | 0.02 |
HbA1c: glycated hemoglobin.