Stomach cancer screening and preventive behaviors in relatives of gastric cancer patients

Table 5 Gastric cancer-preventive behaviors

	Controls (n = 2842)		Non-gastric cancer relatives (n = 454)		Gastric cancer relatives (n = 261)
	Crude	Adjusted	Crude	Adjusted	Crude	Adjusted
Na (mg)
Mean intake (SE)2	5582 (66)	5602 (64)	5574 (166)	5522 (162)	5516 (213)	5483 (212)
P value			0.86	0.99	0.76	0.50
High sodium intake (> 2000 mg)
Rate, n (%)2	2625 (92.4)	93.8	429 (94.5)	94.9	247 (94.6)	95.1
Odds ratio1	1 (referent)	1 (referent)	1.67 (1.04, 2.67)a	1.56 (0.95, 2.57)	1.34 (0.71, 2.54)	1.17 (0.61, 2.26)
Vitamin C (mg)
Mean intake (SE)2	98.5 (1.6)	100.0 (1.6)	114.1 (4.9)	109.7 (4.1)	110.0 (6.2)	107.2 (5.4)
P value			0.03a	0.15	0.07	0.19
Low vitamin C intake (< 60 mg)
Rate, n (%)2	922 (32.4)	30.7	129 (28.4)	30.5	78 (29.9)	30.8
Odds ratio1	1 (referent)	1 (referent)	0.79 (0.59, 1.06)	0.91 (0.67, 1.23)	0.79 (0.55, 1.13)	0.89 (0.62, 1.28)
Dietary fiber (g)
Mean intake (SE)2	8.0 (0.1)	8.0 (0.1)	8.4 (0.2)	8.3 (0.2)	8.3 (0.3)	8.3 (0.3)
P-value			0.20	0.30	0.08	0.14
Low fiber intake (< 20 g)
Rate, n (%)2	2447 (86.1)	87	383 (84.4)	86.9	225 (86.2)	87.4
Odds ratio1	1 (referent)	1 (referent)	0.86 (0.44, 1.66)	0.86 (0.44, 1.68)	1.17 (0.50, 2.72)	1.20 (0.50, 2.85)
Current smoking status
Rate, n (%)2	602 (21.7)	12.9	89 (20.5)	13.2	58 (22.8)	15.4
Odds ratio1	1 (referent)	1 (referent)	0.95 (0.69, 1.29)	1.04 (0.73, 1.47)	1.10 (0.78, 1.55)	1.18 (0.76, 1.83)

^aP < 0.05.

¹Adjusted odds ratios were calculated via multiple logistic regression and adjusted for age, sex, education, marital status, smoking, alcohol consumption, income, and self-reported health status;

²Adjusted means and adjusted rates were calculated via analysis of covariance adjusted for age, sex, education, marital status, smoking, alcohol consumption, income, and self-reported health status.