Table 5.

Risk Factors for Irritable Bowel Syndrome in Univariate and Multivariate Analyses

	Univariate analysis			Multivariate analysis
	OR	95% CI	P-value	OR	95% CI	P-value
Rotating shift work	1.39	0.68–2.82	0.362	1.32	0.47–3.74	0.596
Age (yr)	0.98	0.99–1.04	0.427	1.02	0.94–1.12	0.603
BMI (≥ 18.5 kg/m2)	0.72	0.32–1.61	0.417	0.81	0.33–1.97	0.644
Marriage (Married)	0.73	0.35–1.52	0.398	0.98	0.33–2.98	0.981
Work experience (≥ 3 yr)	0.84	0.44–1.58	0.580
Drinking (> 1 day/wk)	0.96	0.51–1.81	0.985
College graduate	1.97	0.98–3.96	0.058	1.90	0.87–4.16	0.107
Poor sleep quality (PSQI ≥ 6)	0.86	0.24–3.13	0.820
Psychosocial alarm
None	Reference			Reference
Non-serious	4.50	1.03–19.64	0.045	7.43	0.97–57.21	0.054
Serious	9.35	2.07–42.29	0.004	10.75	1.30–88.99	0.028

BMI, body mass index; PSQI, Pittsburgh Sleep Quality Index.

For the psychosocial alarm, the absence of psychosocial alarm is the reference group.