Table 4.

Associations of combinations of waist and hip circumferences with either erosive oesophagitis (EO) or Barrett’s oesophagus (BO)

		Hip circumference
		1st tertile (<102.0 cm)	2nd tertile (102.0–110.1 cm)	3rd tertile (≥110.1 cm)
Waist circumference	1st tertile (<100.8 cm)	195/43	46/7	1/1
		1 (reference)	0.690 (0.292 to 1.63)	n/a*
		1 (reference)	1.08 (0.435 to 2.70)	n/a*
	2nd tertile (100.8–111.9 cm)	36/17	136/56	44/12
		2.14 (1.10 to 4.16)	1.87 (1.19 to 2.94)	1.24 (0.603 to 2.54)
		2.14 (1.01 to 4.50)	1.70 (1.01 to 2.86)	1.15 (0.502 to 2.63)
	3rd tertile (≥111.9 cm)	2/0	39/19	176/70
		n/a*	2.21 (1.17 to 4.19)	1.80 (1.17 to 2.78)
		n/a*	1.97 (0.929 to 4.16)	1.54 (0.935 to 2.54)

The 1st line of each cell is the number of patients without BO or EO/number with BO or EO. The 2nd line of each cell is the crude OR (95% CI). The 3rd line of each cell is the OR (95% CI) adjusted for age, pack-years of cigarette use, daily energy intake, proportion of energy from fat, and physical activity.

^*The effects could not be validly estimated.