Table 5.

Association of waist-to-hip ratio (WHR) with erosive oesophagitis (EO) or Barrett’s oesophagus (BO)

WHR	No with no BO or EO/No with BO or EO	Crude OR (95% CI)	Adjusted OR (95% CI)*	OR (95% CI) further adjusted for waist†
1st quartile (<0.964)	185/30	1 (reference)	1 (reference)	1 (reference)
2nd quartile (0.964–1.000)	164/48	1.81 (1.09 to 2.98)	1.32 (0.747 to 2.33)	0.803 (0.369 to 1.74)
3rd quartile (1.000–1.039)	177/63	2.20 (1.36 to 3.55)	1.54 (0.898 to 2.63)	1.46 (0.703 to 3.01)
4th quartile (>1.039)	149/84	3.48 (2.17 to 5.56)	2.68 (1.57 to 4.55)	2.87 (1.31 to 6.33)
Per 1 SD increment in WHR (0.056)		1.57 (1.33 to 1.83)	1.49 (1.23 to 1.79)	1.66 (1.25 to 2.20)
p Value for trend		<0.001	<0.001	<0.001

^*Adjusted for age, pack-years of cigarette use, daily energy intake, proportion of energy from fat, and physical activity.

^†Adjusted for the same variables as above plus waist circumference (treated as categorical in tertiles).