Table 2.

Mean and median value of Pearson's correlation coefficient (r) among AJ, AM, and AC samples.

Extraction	Sample	Parameter	Correlation coefficient (r)
			AJ	AM	AC
Methanol extract	AJ	Mean	–	0.131	0.069
		Median	–	0.146	–0.054
	AM	Mean	0.131	–	–0.028
		Median	0.146	–	–0.048
	AC	Mean	0.069	–0.028	–
		Median	–0.054	–0.048	–
Water extract	AJ	Mean	–	0.567	0.609
		Median	–	0.584	0.626
	AM	Mean	0.567	–	0.733
		Median	0.584	–	0.800
	AC	Mean	0.609	0.733	–
		Median	0.626	0.800	–

AJ, A. japonica; AM, A. macrocephala; AC, A. chinensis.