Table 2.

Risk factors of H. pylori infection in the study population.

Risk Factor	H. pylori Positive/Total Number (%)	Crude OR	95% CI	p-Value
Age group
≤ 29	38/118 (32.2%)	0.72	0.45–1.13	0.16
30–39	63/156 (40.4%)	1.15	0.77–1.73	0.49
40–49	38/107 (35.5%)	0.87	0.54–1.39	0.58
50–59	33/67 (49.3%)	1.70	0.98–2.95	0.06
≥ 60	16/46 (34.8%)	0.86	0.42–1.68	0.75
Gender
Male	90/210 (42.9%)	1.42	0.98–2.05	0.06
Female	98/284 (34.5%)	1.00
Geographical location
Daklak	102/200 (51.0%)	2.52	1.73–3.65	<0.001
Lao Cai	86/294 (29.3%)	1.00
Ethnicities
E De	94/183 (51.4%)	2.44	1.64–3.62	<0.001
H′mong	40/105 (38.1%)	1.00	0.62–1.59	1.00
Nung	8/24 (33.3%)	0.81	0.29–2.04	0.67
Tay	15/83 (18.1%)	0.30	0.16–0.56	<0.001
Dao	12/60 (20%)	0.37	0.17–0.73	0.002
Xa Pho	13/24 (54.2%)	1.99	0.87–4.54	0.13
Other*	6/15 (40%)	0.64	0.24–1.68	0.5
Marital status
Single	1/3 (33.3%)	1.00
Married	187/491 (38.1%)	1.23	0.06–73.0	1.00
Smoking
Yes	28/81 (34.6%)	0.84	0.49–1.41	0.53
No	160/413 (38.7%)	1.00
Drinking
Yes	55/121 (45.5%)	1.50	0.97–2.32	0.07
No	133/373 (35.7%)	1.00

* include the ethnicities (including Day, Ray, Bo Y, Van Kieu, Thai, Chinese, and Man) with a sample size that is equal or smaller than 5.