Oral Biology Research

Table. 4.

Awareness of NHI-covered dental scaling by general characteristics

Variable Answer (n=337) χ2 p-value

Yes No
Sex Male 97 (80.8) 23 (19.2) 0.874 0.350
Female 184 (84.8) 33 (15.2)
Age (y) 20–29 44 (68.8) 20 (31.3) 12.525 0.006*
30–39 64 (85.3) 11 (14.7)
40–49 98 (88.3) 13 (11.7)
≥50 75 (86.2) 12 (13.8)
Marital status Married 188 (87.9) 26 (12.1) 8.446 0.004*
Single 93 (75.6) 30 (24.4)
Education ≤High school 70 (79.5) 18 (20.5) 5.525 0.063
University 188 (83.2) 38 (16.8)
≥Graduate school 23 (100) 0 (0.00)
Monthly household income (10,000 KRW) ≤199 42 (77.8) 12 (22.2) 2.772 0.597
200 to ≤300 95 (85.6) 16 (14.4)
300 to ≤400 58 (82.9) 12 (17.1)
400 to ≤500 36 (80.0) 9 (20.0)
≥500 50 (87.7) 7 (12.3)

Values are presented as number (%).

NHI, national health insurance.

*p<0.01.

Oral Biol Res 2021;45:135~142 https://doi.org/10.21851/obr.45.03.202109.135
© Oral Biol Res