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Distribution of preoperative vitamin D level by gender and categories (Pearson Chi-square test)
| Characteristic |
Category 1
(<7.1 ng/mL) (%) |
Category 2
(7.2–11.8 ng/mL) (%) |
Category 3
(11.9–23.4 ng/mL) (%) |
Category 4
(>23.5 ng/mL) (%) |
p* |
|---|---|---|---|---|---|
| Female | 31.1 | 21.4 | 22.3 | 25.2 | 0.044 |
| Male | 6.9 | 34.5 | 34.5 | 24.1 |
