Oral Cancer Awareness and Knowledge in the City of Valongo, Portugal

Table 3

Most risk factors or causes mentioned for oral cancer.

Causes of cancer	(𝑛)	(%)
Tobacco	539	89.5
Reduced oral hygiene	501	83.2
Infections in the teeth	492	81.7
Alcohol	381	63.3
Reduced intake fruit and vegetables	295	49
Sun exposure	294	48.8
Car smoke	283	47
Dental treatment in dentists	194	32.2
Coffee	137	22.8
Close contact with another cancer patient	118	19.6