Statistical Analysis
Data analysis was done with SPSS v 23.0. Description of patients at
presentation was presented as number (%) for qualitative variables and
as either mean ± standard deviation or median (range) for continuous
variables. The baseline characteristics were compared between various
subcategories by chi-square test or Fisher exact test for categorical
variables and by Kruskal-Walis or Mann Whitney test for continuous
variables. P value ≤ 0.05 was taken as significant