The Comet Assay for the Evaluation of Genotoxic Potential of Landfill Leachate

Table 4

Statistical significance calculated with Friedman test (nonparametric analysis of variance).

Log C	Me45				NHDF
	Before treatment		After treatment		Before treatment		After treatment
	P for F-test	τ	P for F-test	τ	P for F-test	τ	P for F-test	τ
−1	𝑃<0.0001	0.60	𝑃>0.05	0.03	𝑃<0.0001	0.63	𝑃<0.05	0.07
0	𝑃<0.0001	0.87	𝑃<0.05	0.03	𝑃<0.0001	0.42	𝑃<0.05	0.55
1	𝑃<0.0001	0.32	𝑃<0.05	0.06	𝑃<0.05	0.15	𝑃<0.05	0.67