Table 1.
Characteristics of the study sample.
| Characteristics | Cases, n (%) (n = 40) | Controls, n (%) (n = 52) | p value |
|---|---|---|---|
| Age, years, mean (SD) | 8.8 (2.9) | 7.9 (3.7) | 0.20 |
| Sex (male) | 22 (55) | 25 (48) | 0.51 |
| Family income, LKR/month, median (IQR) | 50 (100–150) | 57.5 (20–100) | 0.05 |
| Serum 25(OH)D <20 ng/mL | 26 (65) | 20 (38.4) | 0.01 |
| Serum 25(OH)D <30 ng/mL | 35 (87.5) | 40 (76.9) | 0.19 |
Expressed as n (%) unless otherwise stated. LKR: Sri Lankan Rupees. For comparisons, ANOVA, the chi-squared test, and the Mann–Whitney U test were used as appropriate.