Table 1. Characteristics of survey respondents (N=3,557).

Characteristics	Non-participants	Participants	Total	P value*
No. (%)	2,392 (67.25)	1165 (32.75)	3,557
Sex, No. (%)
Male	1,199 (68.24)	558 (31.76)	1,757	0.21
Female	1,193 (66.28)	607 (33.72)	1,800
Age group, No. (%)
40–49 years	748 (68.62)	342 (31.38)	1,090	0.28
50–59 years	741 (65.52)	390 (34.48)	1,131
60 years and above	903 (67.59)	433 (32.41)	1,336
Household income level, No. (%)
Below 2,000,000 KRW	243 (68.45)	112 (31.55)	355	0.37
2,000,000–3,990,000 KRW	856 (68.48)	394 (31.52)	1,250
4,000,000 KRW and above	1,293 (66.24)	659 (33.76)	1,952
Education level, No. (%)
Middle school or below	363 (69.41)	160 (30.59)	523	0.18
High school	1,298 (67.82)	616 (32.18)	1,914
Undergraduate and above	731 (65.27)	389 (34.73)	1,120
Cancer screening helps detect early and cure cancer? No. (%)
Strongly agree	686 (65.77)	357 (34.23)	1,043	0.41
Agree	1,534 (67.52)	738 (32.48)	2,272
Disagree	168 (70.89)	69 (29.11)	237
Strongly disagree	4 (80.00)	1 (20.00)	5
Self-perceived general health status, No. (%)
Very good	117 (66.48)	59 (33.52)	176	0.82
Good	1,445 (68.00)	680 (32.00)	2,125
Neutral	743 (65.99)	383 (34.01)	1,126
Bad	84 (66.67)	42 (33.33)	126
Very bad	3 (75.00)	1 (25.00)	4
Comorbidities, No. (%)
No	1,334 (66.70)	666 (33.30)	2,000	0.43
Yes	1,058 (67.95)	499 (32.05)	1,557
Family history of cancer, No. (%)
No	2,033 (67.27)	989 (32.73)	3,022	0.94
Yes	359 (67.10)	176 (32.90)	535
More fear of coronavirus or lung cancer, No. (%)
More fear of lung cancer	1,344 (66.08)	690 (33.92)	2,034	0.09
Neutral	303 (66.30)	154 (33.70)	457
More fear of coronavirus	745 (69.89)	321 (30.11)	1,066

*, analyzed by Chi-square test.