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. 2021 Feb 7;159(5):e399–e409. doi: 10.1016/j.ajodo.2020.11.030

Table II.

Knowledge of COVID-19 among participants

Responses to questions asked on COVID-19 Correct Incorrect
What kind of infection is COVID-19
 Virus 288 (94.7) 16 (5.3)
Average incubation period of COVID-19
 2-14 d 276 (90.8) 28 (9.2)
Symptoms of COVID-19
 May be asymptomatic 167 (54.9) 137 (45.1)
 Fever 279 (91.7) 25 (8.3)
 Cough 288 (94.7) 16 (5.3)
 Sore throat 249 (81.9) 55 (18.1)
 Shortness of breath 286 (94.1) 18 (5.9)
 Diarrhea 78 (25.7) 226 (74.3)
 Vomiting 44 (14.5) 260 (85.5)
 Running nose 103 (33.9) 201 (66.1)
 Red eyes 26 (8.6) 278 (91.4)
 Skin rash 24 (7.9) 280 (92.1)
 Joint/muscle pain 79 (26) 225 (74)
 Loss of taste 145 (47.7) 159 (52.3)
 Loss of smell 138 (45.4) 166 (54.6)
How COVID-19 can be prevented
 Coughing and sneezing 284 (93.4) 20 (6.6)
 Handshaking 272 (89.5) 32 (10.5)
 Touching contaminated surfaces 286 (94.1) 18 (5.9)
 Talking 128 (42.1) 176 (57.9)
How COVID-19 transmission can be transmitted
 Regular handwashing with soap and water 302 (99.3) 2 (0.7)
 Use of alcohol-based hand rub 293 (96.4) 11 (3.6)
 Routine disinfection of contaminated surfaces 297 (97.7) 7 (2.3)
 Use of personal protective clothing by all dental staffs 277 (91.1) 27 (8.9)
 Use of facemasks by all patients 270 (88.8) 34 (11.2)
 Keeping patients in well-ventilated rooms 191 (62.8) 113 (37.2)

Note. Values are n (%).