Table 1.

Patient baseline characteristics

Untransformed OLP (n = 110)Malignant transformed OLP (n = 9)P
Age (y)0.036
    Mean (SD)45.3 (12.3)54.2 (8.9)
    Range9-7441-70
Sex, n (%)0.682
    Female84 (76.4)8 (88.9)
    Male26 (23.6)1 (11.1)
Diet, n (%)1.00
    Bland49 (44.5)5 (55.6)
    Spicy26 (23.6)2 (22.2)
    Missing35 (—)2 (—)
Smoking, n (%) 0.536
    Never76 (69.1)7 (77.8)
    Past and present7 (6.4)1 (11.1)
    Missing27 (—)1 (—)
Ethanol intake, n (%)1.00
    Never74 (67.3)7 (77.8)
    Past and present9 (8.2)1 (11.1)
    Missing27 (—)1 (—)
Follow-up (y)0.943
    Mean4.764.61
    Range1.33-14.50.03-18.3
Epithelial dysplasia, n (%)
    Nondysplasia99 (90.0)
    Dysplasia11 (10.0)
Tumor stage, n (%)
    Early9 (100.0)
    Advanced0 (0.0)