Etiologic factors of gastric cardiac adenocarcinoma among men in Taiwan

Table 2 Association between suspected risk factors and risk of gastric cardiac adenocarcinoma in a Taiwan case-control study, 2000-2009

Variables	Case	Control	OR1	95% CI
BMI2 (kg/m2)
> 24	11	96	0.89	0.56-1.38
≤ 24	30	109	1.00
Cigarette smoking
Yes	29	110	2.28a	1.05-4.96
No	12	95	1.00
Alcohol consumption
Yes	18	65	1.71	0.88-3.26
No	23	140	1.00
Areca quid chewing
Yes	9	20	2.75	0.86-8.77
No	32	185	1.00
Daily exercise
Yes	10	83	0.58	0.16-2.16
No	31	122	1.00
Sleep with others in childhood
Yes	37	165	2.10	0.44-10.24
No	4	40	1.00
Working or exercising after meals
Yes	27	74	3.26a	1.31-8.11
No	14	131	1.00
H pylori serum
Positive	30	118	2.69a	1.30-5.53
Negative	11	87	1.00
Cag+A3
Positive	27	102	1.27	0.21-7.66
Negative	3	16	1.00
GERD symptoms
Yes	11	48	1.28	0.64-2.55
No	30	157	1.00
Passive smoking (family)
Yes	17	66	1.48	0.37-5.92
No	24	139	1.00
Passive smoking (colleague)
Yes	18	91	1.01	0.37-2.59
No	23	114	1.00
Steaming hot dietary habits (/d)
Yes	31	175	0.72	0.32-1.53
No	10	30	1.00
Cold dietary habits (/d)
Yes	12	62	0.94	0.32-2.75
No	29	143	1.00
Water supply
Non-tap-water	13	53	1.47	0.29-7.31
Tap-water	28	152	1.00

¹Odds ratio (OR): Adjusted by age and years of schooling;

²BMI: Obesity: BMI more than 28 kg/m²; Overweight: BMI more than 24 and less than 28 kg/m²; Normal: BMI more than 18.5 and less than 24 kg/m²; Underweight: BMI less than 18.5 kg/m²;

³Cag⁺A: Cytotoxin associated gene A positive strains. (Those who were H pylori positive were classified by CagA strains).

^aP < 0.05.