Table 4
Prevalence of irritable bowel syndrome according to sex

	IBS (≥1/month)	IBS (≥2∼3/month)	Total
Male	73 (5.6%)	67 (5.1%)	1,311
Female	98 (8.1%)	87 (7.1%)	1,217
Total	171 (6.8%)*	154 (6.1%)†	2,528

*P value=0.013; ^†P value=0.032.