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. 2017 May 17;12(5):e0177787. doi: 10.1371/journal.pone.0177787

Table 2. Oral cancer knowledge questions and correct answers and participants response.

Questionnaire Item Right Answer Correct Response n (%)
Certain types of HPV can lead to oral cancer True 163 (54)
There is an HPV vaccine for both men and women that can prevent cancer True 112 (37)
In your opinion oral cancers are more common in which age group? 41 years and older 36 (12)
In your opinion, in which gender are oral cancers more common? Men 50 (16)
In your opinion, where are the most likely locations of oral cancers? Tongue 12 (4)
In your opinion, which of these could cause oral cancer? (You may choose more than one answer) Alcohol, smoking, HPV 9 (3)
How do you imagine oral cancers look like in the mouth? (You may choose more than one answer) Redness, ulcers, whiteness, mixture of red and white, swelling 17 (6)
Can oral cancers manifest without initial complaint, pain, or symptom? Yes 151 (50)
Does early diagnosis improve recovery from oral cancers? Yes 203 (67)
Is oral cancer a contagious disease? No 108 (36)
Excessive exposure to sunlight will increase a person’s chance of getting oral cancer No 81 (27)
Human Papillomavirus’ infection will increase a person’s chance of getting oral cancer Yes 91 (30)
Eating hot spicy foods will increase a person’s chance of getting oral cancer No 123 (40)
Regular alcohol drinking will increase a person’s chance of getting oral cancer Yes 53 (17)
Lack of fruits and vegetables will increase a person’s chance of getting oral cancer No 80 (26)
Tobacco use in any form will increase a person’s chance of getting oral cancer Yes 176 (58)
Frequently biting the cheek or lip will increase a person’s chance of getting oral cancer No 62 (20)