Fig. 2From: Decreased vitamin D levels in children with primary mono-symptomatic nocturnal enuresisThe frequency of bed-wetting according to 25(OH) D concentrations. The lower mean 25(OH) D concentrations were associated with higher frequencies of bed wetting (Every night: 7.0 ± 1.4, 3–5 time/week: 11.2 ± 1.7, 1–3 times/week: 17.6, < 2times/week: 22.4 ± 2.9, Once/6 month: 24.1 ± 4.3 (ng/ml), P < 0.001Back to article page