Table 2. Test of homogeneity of variances using Levene’s test (α=0.05).

Sig.: level of significance

If p>α, the variances of the populations are homogenous.

Phase	Levene statistic	df1	df2	Sig.
In vitro clot lysis at 90 minutes	3.032	5	30	0.025
In vitro clot lysis at 1200 minutes	3.107	5	30	0.022
In vivo	6.637	5	12	0.003