Table 2 Analyses of the association between COVID-19, periodontitis, sex, and age

Disease

Group

Sex

Frequency (%)

Chi2 Test

Male

Female

COVID-19

MC

33 (52.4%)

33 (55.9%)

Chi2 = 0.155

P = 0.69

SC

30 (47.6%)

26 (44.1%)

Periodontitis

HP

14 (22.2%)

23 (39%)

Chi2 = 9.17

P = 0.01^*

MP

19 (30.2%)

23 (39%)

SP

30 (47.6%)

13 (22%)

Disease

Group

Age

Mean + SD^a

Test

COVID-19

MC

49.71 ± 13.89

Independent t-test

P = 0.004^*

SC

56.48 ± 11.76

Periodontitis

HP

43.16 ± 12.2

ANOVA test

P < 0.001^*

MP

54.98 ± 11.95

SP

59.02 ± 10.94