Table 2. Comparison of psychological variables between IBS-positive and IBS-negative group.

^*p<0.05, ^***p<0.001. IBS: irritable bowel syndrome, N: number, SD: standard deviation, PHQ-9: patient health questionnaire-9, GAD-7: generalized anxiety disorder-7, KOSS: Korean Occupational Stress Scale, WCCL: Ways of Coping Checklist, RSES: Rosenberg's Self-Esteem Scale, WHOQOL-BREF: World Health Organization Quality of life-BREF