Table 3.

Kruskal–Wallis H test statistics for the antitumor effect of BZ in B16-F1 tumor-bearing mice.

Days	N	Chi-Square (χ2)	Degree of Freedom (df)	Significance (p)
0	20	6.020	3	0.111
1	20	3.160	3	0.368
2	20	10.768	3	0.013 *
3	20	11.366	3	0.010 *
4	20	14.154	3	0.003 **
5	20	15.274	3	0.002 **
6	20	15.332	3	0.002 **
7	20	15.754	3	0.001 **
8	20	17.583	3	0.001 **

N: the sum of sample sizes for all samples. * p < 0.05, ** p < 0.01.