Table 2

Difference of corneal autofluorescence ratio between groups

Groups compared	Mean difference	Difference range	p_param	p_non-par
Melanoma and naevus	+0.13	+0.068 to +0.192	<0.001	<0.001
Naevus and healthy control	−0.04	−0.085 to +0.005	0.27	0.27
Melanoma and healthy control	+0.09	+0.028 to +0.152	0.014	0.020

↵Difference between mean ratios of two groups.
↵95% confidence range of the difference.
↵Significance according to the parametric Turkey multiple comparison procedure.
↵Significance according to the non-parametric Kruskal-Wallis test.
Significance according to the global Kruskal-Wallis test across the three groups: p<0.001.