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Table 1 Characteristics of study population categorized according to the grade of malignancy

From: Diagnostic accuracy of diffuse reflectance imaging for early detection of pre-malignant and malignant changes in the oral cavity: a feasibility study

Patient characteristics Normal/clinically healthy Pre-malignant Malignant (cancer)
Age (mean, SD) 27.5 (7.0) 54.2 (12.0) 57.2 (10.5)
Men (n, %) 17 (16.5) 13 (59.1) 14 (42.4)
Tobacco use (n, %) 1(1) 17 (77.3) 26 (78.8)
Alcohol use (n, %) 13 (12.6) 8 (36.4) 15 (45.5)