Figure 1From: Chronic urticaria merits serum vitamin D evaluation and supplementation; a randomized case control study Enrollment and outcome. 505 patients were enrolled for eligibility out of which only 192 fulfilled the eligibility criteria. 276 patients did not fulfill the criteria, 18 patients refused to participate, 8 withdrew before treatment, 4 patients having evidence of current drug/alcohol abuse were not recruited for the study and 7 did not show up after screening. 192 patients fulfilling the eligibility criteria were randomized into groups a, b and c. 48 patients in group a, 42 in group b and 57 in group c completed the study. The rest withdrew from study, had adverse events, missed to take the dose, were withdrawn by the guardian or were lost to follow-up.Back to article page