Hyperkeratosis Mild dysplasia Moderate dysplasia Severe dysplasia Squamous cell carcinoma
Mean 6.6 6.4 9.8 6.1 2.4
S.D. 2.970 2.820 5.320 2.610 2.970
Sample size (n) 10 10 10 10 10
Standard error of mean 0.9392 0.8918 1.682 0.8254 0.9392
Lower 95% confidence limit 4.476 4.383 5.995 4.233 6.2755
Upper 95% confidence limit 8.724 8.417 13.605 7.967 4.524
Table 1: Mean mitotic indices for lesions studied.