Prevalence and risk factors of gastroesophageal reflux symptoms in a Chinese retiree cohort

BMC Gastroenterology

Table 3 Obesity related factors and risk of symptomatic gastroesophageal reflux

Variables	Cases	Controls	Unadjusted OR	95% CI	Adjusted OR^a	95% CI
BMI (kg/m²)
<24.0	66	3363	1.0	(ref)	1.0	(ref)
24.0-27.9	65	3251	1.0	(0.7-1.4)	1.0	(0.7-1.4)
≥28.0	19	1287	0.8	(0.5-1.3)	0.7	(04.-1.2)
Waist^b (cm)
Low	116	6021	1.0	(ref)	1.0	(ref)
High	34	1879	0.9	(0.6-1.4)	0.9	(0.6-1.3)
WHR^c
Low	106	5915	1.0	(ref)	1.0	(ref)
High	44	1985	1.2	(0.9-1.8)	1.1	(0.8-1.6)

BMI: body mass index (weight[kg]/height²[m]); WHR: wasit-to-hip ratio; OR, odds ratio; CI, confidence interval.
^aIn the multivariate logistic regression model adjustments were made for age, sex, education, occupation, tobacco smoking, alcohol drinking, tea drinking, history of diabetes mellitus, hypertension, gastritis or peptic ulcer, and serum TG.
^bLow: Male<92cm and female<88cm; High: Male≥92cm and female≥88cm.
^cLow: Male<0.95 and female<0.89; High: Male≥0.95 and female≥0.89.

ISSN: 1471-230X