Table 1.

Characteristics of gallbladder cancer cases (GBC) and gallstone patients (GS) tested for inflammatory proteins in the Shanghai Biliary Tract Cancer Case-Control Study.

	GBC (N=144)	GS (N=150)
Median age (range)	67 (39–74)	65 (34–74)
Male, N (%)	45 (31.3)	41 (27.3)
Ever smoker, N (%)	42 (29.4)	32 (21.3)
Ever drinker, N (%)	24 (16.7)	23 (15.3)
Self-reported diabetes, N (%)	16 (11.2)	22 (14.7)
Education, N (%)
None/Primary	78 (54.2)	52 (34.7)
Jr. Middle	35 (24.3)	33 (22.0)
Sr. Middle	15 (10.4)	43 (28.7)
Some college	16 (11.1)	22 (14.7)
Self-reported BMI 5 years prior to interview
Underweight: <18.5	14 (9.7)	10 (6.7)
Normal: 18.5 24.9	73 (50.7)	95 (63.3)
Overweight: 25 29.9	50 (34.7)	40 (26.7)
Obese: ≥30.0	7 (4.9)	5 (3.3)
Gallstones, N (%)	115 (79.9)	150 (100.0)