Syndromes

n

Peak time (s)

Area under the curve (cm2)

gradient (d(dB)/d(t))

Time of arrival (s)

Cold dampness

36

43.43 ± 12.57

140.26 ± 39.66

0.53 ± 0.75

28.33 ± 9.32

Qi stagnation and blood stasis

24

11.92 ± 6.39

416.43 ± 292.07

0.43 ± 0.48

29.85 ± 5.51

t value

8.537

−3.983

0.408

−0.541

P value

<0.01

<0.01

0.686

0.592