The aims of this study are as follows: (1) To assess the factors associated with oral cancer among cancer patients. (2)To find out the association between factors associated with oral cancer with their selected sociodemographic variables. Materials and Methods: This was descriptive study with 200 subjects, selected through convenient sampling technique. Descriptive case–control design was used. Data was collected by structured questionnaires . Data was analyzed by using descriptive and inferential statistics in terms of mean median range and by distribution, chi- square test for association. Results: In interview schedule ,out of 200 subjects, 100 case group an 100 control group, highest percentage (45%) of oral cancer occurs due to consumption of tobacco, 17% are suffer oral cancer due to consumption of tobacco with smoking, 9% occur to smoking and 4% due to Alcohol consumption.Findings related to factors associated with oral cancer. The overall findings reveal that Percentage wise distribution of oral cancer patients attending in cancer units of selected hospitals of Bagalkot. Scores reveals that out of 200 subjects,(100 case group and 100 control group) highest percentage (45%) of oral cancer patients suffer from tobacco use, 17% of tobacco with smoking, least percentage of alcohol consumption, lack of oral hygiene, consumption of hot beverages, radiation, Betel nuts and some are family history of oral cancer. Conclusion: The study proved that structured questionnaires on assess the factors associated with oral cancer among cancer patients was scientific, logical and cost effective strategy.

Keywords : Oral Cancer Case Group, Control Group With Factors Associated With Oral Cancer.