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Cases with different levels of 25(OH)D in Groups NC, DM1, and DM2.
| Group | 25(OH)D < 20 | ≤20 < 25(OH)D ≤ 30 | 25(OH)D > 30 | Chi-squared | P |
|---|---|---|---|---|---|
| NC | 6 (15.8%) | 25 (65.8%) | 7 (18.4%) | 38.84 | <0.01 |
| DM1 | 29 (64.4%) | 12 (26.7%) | 4 (8.9%) | ||
| DM2 | 48 (77.4%) | 9 (14.5%) | 5 (8.1%) |
Note: NC versus DM1: P < 0.01; NC versus DM2: P < 0.01; DM1 versus DM2: P > 0.05.
