Table 3.

Predictors for dyspepsia-GER overlap vs. GER alone, and separately dyspepsia alone.

Predictor variables in the models	Overlap vs. GER alone		Overlap vs. Dyspepsia alone
	OR (95% CI)*	OR (95% CI)‡	OR (95% CI)*	OR (95% CI‡
Age, per 10 years †	0.9 (0.8, 1.1)	1.0 (0.9,1.1)	0.9 (0.8, 1.0)	0.9 (0.8,1.1)
Female gender †	1.5 (1.0, 2.4)	1.7 (1.0,2.7)	1.0 (0.6, 1.6)	1.0 (0.6,1.6)
Mean SSC score †	1.9 (1.4, 2.5)	1.8 (1.3,2.5)	1.6 (1.2, 2.1)	1.6 (1.1,2.2)
Visiting a physician > 5 times †	1.2 (0.7, 2.0)	1.1 (0.6,1.9)	1.0 (0.6, 1.8)	1.1 (0.6,1.9)
Medication
Proton pump inhibitors (PPIs) †	1.5 (1.0, 2.4)	1.7 (1.0,2.7)	2.4 (1.5, 3.8)	2.7 (1.6,4.4)
Ca++ blocker †	1.6 (0.7, 3.9)	1.8 (0.7,4.7)	1.0 (0.4, 2.2)	1.0 (0.4,2.6)
Antidepressants †	1.1 (0.7, 1.8)	1.2 (0.7,2.1)	0.8 (0.5, 1.3)	0.8 (0.5,1.4)
Antispasmodic †	2.2 (0.8, 5.9)	2.6 (0.9,7.5)	1.6 (0.6, 4.0)	1.7 (0.7,4.6)
Narcotic pain †	1.1 (0.7, 1.9)	1.2 (0.7,2.1)	1.1 (0.6, 1.8)	1.1 (0.6,2.0)
IBS §	2.2 (1.3, 3.6)	2.2 (1.3,3.7)	1.0 (0.6, 1.7)	1.1 (0.6,1.9)
SSC items#
Headaches	1.2 (1.0, 1.5)	1.1 (0.9,1.4)	1.2 (0.9, 1.5)	1.2 (0.9,1.6)
Backaches	1.2 (1.0, 1.5)	1.2 (1.0,1.5)	1.0 (0.8, 1.2)	1.0 (0.8,1.3)
Insomnia	1.4 (1.1, 1.7)	1.3 (1.1,1.6)	1.3 (1.1, 1.6)	1.3 (1.0,1.6)
General stiffness	0.8 (0.6, 1.0)	0.8 (0.6,1.0)	1.0 (0.8, 1.2)	0.9 (0.7,1.2)
Dizziness	1.2 (0.9, 1.6)	1.2 (0.9,1.5)	1.3 (1.0, 1.6)	1.2 (0.9,1.5)
Weakness	1.1 (0.9, 1.4)	1.2 (0.9,1.5)	0.9 (0.7, 1.2)	1.0 (0.9,1.3)

^*, Odds ratios for overlap (OR [95%CI]); SSC, somatic symptom checklist; IBS, irritable bowel syndrome

^‡Weighted estimates to accommodate age and sex association with survey response.

^†Adjusted for age (per 10 years), gender, SSC, constipation, diarrhea and IBS

^§Adjusted for age (per 10 years), gender, total SSC score, constipation and diarrhea

^#Adjusted for age (per 10 years), gender, constipation, diarrhea and IBS