Decreased vitamin D levels in children with primary mono-symptomatic nocturnal enuresis

Egyptian Journal of Medical Human Genetics

Table 3 Relation between frequency bed-wetting with vitamin D

Vitamin D	Frequency bed wetting					Test of sig	P value
Vitamin D	Every night (n = 6)	3–5/wk (n = 6)	1–3/wk (n = 10)	< 2/wk (n = 17)	Once/6 months (n = 11)	Test of sig	P value
< 20 ng/ml	6 (100.0%)	6 (100.0%)	7 (70.0%)	3 (17.6%)	2 (18.2%)	χ² = 25.13	< 0.001
> 20-ng/ml	0 (0.0%)	0 (0.0%)	3 (30.0%)	14 (82.4%)	9 (81.8%)
Mean ± SD	7.0 ± 1.4	11.2 ± 1.7	17.6 ± 3.7	22.4 ± 2.9	24.1 ± 4.3	H = 28.014	< 0.001

χ², Chi-square test; H, H for Kruskal–Wallis test; Pairwise comparison bet. each 2 groups was done using Post Hoc Test (Dunn's for multiple comparisons test)