Vitamin D Deficiency in Dengue Hemorrhagic Fever and Dengue Shock Syndrome among Sri Lankan Children: A Case-Control Study

Table 1

Characteristics of the study sample.

Characteristics	Cases, n (%) (n = 40)	Controls, n (%) (n = 52)	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.