Table 4.

Univariate and Multivariate Logistic Regression Analyses of the Predictors of Functional Dyspepsia and Irritable Bowel Syndrome

	Variables	Univariate analysis		Multivariate analysis
		OR (95% CI)	P-value	Adjusted OR (95% CI)	P-value
FD	K-BDI level ≥ 10	4.726 (4.186–5.336)	< 0.001	1.984 (1.705–2.309)	< 0.001
	BEPSI-K level ≥ 2.4	2.233 (2.041–2.441)	< 0.001	1.713 (1.526–1.923)	< 0.001
	IBS	6.619 (6.185–7.084)	< 0.001	5.668 (5.267–6.101)	< 0.001
	Age	0.982 (0.980–0.985)	< 0.001	0.994 (0.990–0.997)	< 0.001
	Female sex	1.288 (1.216–1.364)	< 0.001	1.282 (1.179–1.394)	< 0.001
	Body mass index	0.954 (0.945–0.963)	< 0.001	0.973 (0.961–0.984)	< 0.001
	Current smoker	1.185 (1.109–1.268)	< 0.001	1.188 (1.090–1.294)	< 0.001
	Hypertension	0.783 (0.723–0.848)	< 0.001
	NSAID	1.148 (1.013–1.302)	0.031
IBS	K-BDI level ≥ 10	5.646 (4.965–6.421)	< 0.001	3.508 (3.005–4.096)	< 0.001
	BEPSI-K level ≥ 2.4	2.638 (2.401–2.900)	< 0.001	1.730 (1.539–1.945)	< 0.001
	FD	6.619 (6.185–7.084)	< 0.001	5.681 (5.276–6.116)	< 0.001
	Age	0.965 (0.962–0.968)	< 0.001	0.970 (0.966–0.974)	< 0.001
	NSAID	1.263 (1.103–1.445)	0.001	1.238 (1.049–1.461)	0.012
	Body mass index	0.962 (0.953–0.972)	< 0.001	0.983 (0.972–0.995)	0.004
	Current smoker	1.356 (1.262–1.457)	< 0.001	1.154 (1.061–1.255)	0.001
	Female sex	1.146 (1.075–1.221)	< 0.001
	Drinker (social + heavy)	1.259 (1.157–1.371)	< 0.001
	Past history of cancer	0.772 (0.617–0.968)	0.025
	Diabetes	0.721 (0.621–0.836)	< 0.001
	Hypertension	0.714 (0.653–0.782)	< 0.001
	Stroke	0.535 (0.345–0.830)	0.005
	Antiplatelet agent	0.750 (0.647–0.869)	< 0.001

CI, confidence interval; OR, odds ratio; FD, functional dyspepsia; K-BDI, Korean version of the Beck’s Depression Inventory; BEPSI-K, the Brief Encounter Psychosocial Instrument-Korean version; NSAID, nonsteroidal anti-inflammatory drug; IBS, irritable bowel syndrome.

Univariate and multivariate logistic regression analyses were performed.