Journal of Dental Hygiene Science : eISSN 2233-7679

Table 1

Comparison Before and After COVID-19 of Tooth Brushing

Variable Before COVID-19 After COVID-19


Never Sometimes Almost Always χ2 Never Sometimes Almost Always χ2
Gender 3,000.00a 2,100.00a
Boys 13,807 (46.27) 7,042 (23.60) 4,490 (15.05) 4,502 (15.09) 14,709 (51.88) 6,182 (21.80) 3,497 (12.33) 3,965 (13.98)
Girls 8,211 (29.90) 5,639 (20.53) 4,572 (16.65) 9,040 (32.92) 10,035 (37.73) 5,058 (19.02) 3,884 (14.60) 7,618 (28.64)
School type 3,000.00a 3,600.00a
Middle school 13,824 (47.05) 7,018 (23.88) 3,868 (13.16) 4,674 (15.91) 15,747 (54.37) 6,226 (21.50) 3,429 (11.84) 3,559 (12.29)
High school 8,194 (29.35) 5,663 (20.28) 5,194 (18.60) 8,868 (31.76) 8,997 (34.62) 5,014 (19.29) 3,952 (15.21) 8,024 (30.88)
Academic achievement 90.00a 76.60a
Low 7,271 (40.11) 4,107 (22.66) 2,745 (15.14) 4,003 (22.08) 8,412 (46.18) 3,756 (20.62) 2,409 (13.22) 3,640 (19.98)
Middle 6,228 (36.14) 3,930 (22.80) 2,815 (16.33) 4,261 (24.72) 7,060 (42.57) 3,579 (21.58) 2,329 (14.04) 3,617 (21.81)
High 8,519 (38.82) 4,644 (21.16) 3,502 (15.96) 5,278 (24.05) 9,272 (46.02) 3,905 (19.38) 2,643 (13.12) 4,326 (21.47)
The areas of residence 1,200.00a 2,200.00a
Rural 927 (20.61) 1,010 (22.46) 984 (21.88) 1,576 (35.05) 894 (20.57) 815 (18.75) 914 (21.03) 1,723 (39.65)
Small city 9,966 (36.28) 6,058 (22.05) 4,496 (16.37) 6,951 (25.30) 11,508 (42.65) 5,648 (20.93) 3,718 (13.78) 6,107 (22.63)
Large city 11,125 (43.91) 5,613 (22.16) 3,582 (14.14) 5,015 (19.79) 12,342 (52.25) 4,777 (20.22) 2,749 (11.64) 3,753 (15.89)
Residential type 408.42a 846.74a
With family 21,308 (39.27) 12,048 (22.20) 8,367 (15.42) 12,544 (23.12) 24,196 (46.24) 10,723 (20.49) 6,805 (13.00) 10,608 (20.27)
Without family 710 (23.39) 633 (20.85) 695 (22.89) 998 (32.87) 548 (20.95) 517 (19.76) 576 (22.02) 975 (37.27)
Family economic status 55.04a 74.53a
Low 2,843 (38.73) 1,591 (21.67) 1,195 (16.28) 1,712 (23.32) 3,314 (45.95) 1,374 (19.05) 954 (13.23) 1,570 (21.77)
Middle 10,494 (38.22) 5,882 (21.42) 4,265 (15.53) 6,816 (24.82) 11,882 (45.01) 5,173 (19.60) 3,535 (13.39) 5,807 (22.00)
High 8,681 (38.57) 5,208 (23.14) 3,602 (16.01) 5,014 (22.28) 9,548 (44.74) 4,693 (21.99) 2,892 (13.55) 4,206 (19.71)

aData was analysed by chi-square test.

J Dent Hyg Sci 2022;22:171-9 https://doi.org/10.17135/jdhs.2022.22.3.171
© 2022 J Dent Hyg Sci