Table 7. Differences in participants’ knowledge about risk factors of gastric cancer considering demographic characteristics.

*Statistically significant

Variable	N	knowledge about risk factors Mean± SD	test	value	P-value
Gender
male	184	74.4±12	t	2.203	0.028*
female	242	71.9±10.9
Age
<=20years	75	76.6±12.9	F	7.27	0.000*
21-30 years	170	74.6±11.6
31-40years	65	69.9±11.5
41-50years	69	68.2±8.7
>50years	47	72.7±9.1
Education
Illiteracy	4	68.3±6.3	F	0.406	0.804
elementary school	8	71.4±10
intermediate school	8	73.3±11.8
high school	112	73±11.5
College or above	294	74.1±3.4
Occupation
Student	178	77.3±10.9	F	11.98	0.000*
Employed	111	69.9±11.7
Unemployed	91	69.4±10.5
Retired	36	71.3±9.6
Freelancer	10	69.9±9.9
Working or studying in a medical field
yes	144	77.3±11.1	t	5.79	0.000*
no	282	70.8±11
Monthly income
less than 5000	244	74.4±11.8	F	3.29	0.021*
5000-10000	80	70.6±10.9
10000-20000	88	71.3±10.6
more than 20000	14	71.9±11.7
less than 5000	244	73±11.5