Table 3.

Results of ANOVA and multiple comparison analysis.

		ANOVA	Scheffe's grouping
		P value	Cun	Guan	Chi	P1	P2	P3
Left	Artery diameter	<0.0001	A	B	A	A	A	A
	Artery depth	<0.0001	A	B	A	C	D	E
	Average blood flow velocity	<0.0001	A	B	B C	B C	B C	C
Right	Artery diameter	<0.0001	A	C	A	A B	B	B
	Artery depth	<0.0001	A	B	C	D	E	F
	Average blood flow velocity	<0.0001	A	B	C	C	C	C

Each letter from A to F indicates distinct group by Scheffe's test.