Brief Article
Copyright ©2011 Baishideng Publishing Group Co.
World J Gastroenterol. Jul 21, 2011; 17(27): 3242-3247
Published online Jul 21, 2011. doi: 10.3748/wjg.v17.i27.3242
Table 1 Baseline demographic and clinical characteristics of patient population
Treatment groupPlacebo group
No. of patients9897
Age (yr, mean ± SD)49.2 ± 14.145.5 ± 14.9
Gender (male/female)47/5142/55
Total scores of symptoms before treatment (mean ± SD)9.0 ± 2.88.4 ± 2.6