Table 3.

Mean years to SCC progression, sensitivity, specificity, accuracy, OR, and median immunostain score for precancerous lesions and SCC

	Mean years to SCC (SD)	Sensitivity (%)	Specificity (%)	Accuracy (%)	OR (95% CI)	Mean score (SD)
No histologic atypia	3.0 (2.8)	71.9	74.2	73.4	8.6 (3.7-19.8)	0.39 (0.36)
Atypia/dysplasia	2.9 (2.7)	82.1	74.2	76.5	14.3 (4.9-41.5)	0.55 (0.45)
Precancerous lesion (combined above two rows)	2.9	76.0	74.2	75.1	10.5 (4.8-22.6)	—
SCC	—	91.7	74.2	80.0	29.8 (9.4-94.6)	0.54 (0.40)
Precancerous lesions progressing to SCC
In <3 y	—	64.3	74.2	71.2	5.8 (2.4-13.8)	—
After >3 y	—	85.2	74.2	78.2	19.9 (7.3-55.5)	—