Table 2.

Changes in Onychomycosis Severity Index (OSI) for the 34 nails treated with laser therapy

	Final OSI
	none or cure (0 points)		mild (1–5 points)		moderate (6–15 points)		severe (16–35 points)		Total
	freq.	%	freq.	%	freq.	%	freq.	%	freq.	%
Initial OSI
Mild (1–5 points)	3a	75.0a	1b	16.7b	3c	15.8c	0	0.0	7	20.6
Moderate (6–15 points)	1a	25.0a	5a	83.3a	11b	57.9b	0	0.0	17	50.0
Severe (16–35 points)	0	0.0	0	0.0	5a	26.3a	5b	100.0b	10	29.4
Total	4	100.0	6	100.0	19	100.0	5	100.0	34	100.0

^aCases with a decrease in OSI grade.

^bCases with no change in OSI grade.

^cCases with an increase in OSI grade.