Table 1. Demographics of the BEST2 Study patient cohorts.

Variable	Controls	BE Cases a
Number	463	647
Age (years)—median (IQR)	56 (44–66)	66 (58–73)
Ethnicity—number (percent)
White	428 (92.5%)	626 (96.8%)
Other	34 (7.3%)	12 (1.8%)
Missing data	1 (0.2%)	9 (1.4%)
Male:female ratio b	1.0:1.3	4.0:1.0
BMI—median (IQR)	26.8 (24.0–30.2)	28.1 (25.6–31.2)
Waist-to-hip ratio—median (IQR)	0.88 (0.83–0.94)	0.95 (0.90–0.99)
Hiatus hernia—percent	34.5%	80.6%
Maximum length of BE (cm)—median (IQR)	n/a	5 (3–8)

^aBE defined as endoscopically visible columnar-lined esophagus that measured at least 1 cm circumferentially or at least 3 cm in non-circumferential tongues (Prague classification ≥C1 or ≥M3).

^bSex ratio rounded to the nearest tenth.

n/a, not applicable.