- Associations with vitamin D deficiency (n=40).
| Variable | True n (%) | False n (%) | P-value |
|---|---|---|---|
| Hypothyroidism | 18 (36.73%) | 22 (10.48%) | <0.001 |
| Acquired hypothyroidism | 8 (57.14%) | 32 (13.06%) | <0.001 |
| Developmental delay | 8 (44.44%) | 32 (13.28%) | 0.002 |
| Intellectual disability | 8 (40%) | 32 (13.39%) | 0.005 |
| Obstructive sleep apnea | 4 (57.14%) | 36 (14.29%) | 0.012 |
| IgA deficiency | 2 (100%) | 38 (14.79%) | 0.023 |
The percentages in the table represent the proportion of down syndrome (DS) children within each condition who have vitamin D deficiency (True) compared to those without deficiency (False). Each percentage is calculated within the corresponding row category. For example, 36.73% of DS children with hypothyroidism had vitamin D deficiency, while only 10.48% of DS children without hypothyroidism had vitamin D deficiency.