Table 1.

Demographic characteristics of the study participants

Baseline characteristic	Vitamin D group	Placebo group	P
Age (mean±SD)	42.24±12.26	40.06±13.37	0.571
Weight (mean±SD)	66.15±9.37	66.28±12.39	0.968
BMI (mean±SD)	25.85±3.78	25.27±4.07	0.619
Smoking (%)	0	2 (8.7)	0.489
Vitamin D consumption (%)	0	0	1.00
SSS (mean±SD)	250.87±96.92	245.78±112.82	0.737
IBS-QOL (mean±SD)	57.35±27.96	46.70±31.37	0.231
Total score (mean±SD)	81.30±15.17	80.00±13.40	0.759

Significances are based on independent t-test for quantitative variables and Pearson’s Chi-squared test/Fisher exact test for qualitative factors. SSS=Symptoms severity score, QOL=Quality of life, SD=Standard deviation, IBS=Irritable bowel syndrome, BMI=Body mass index