Skip to main content
. Author manuscript; available in PMC: 2009 Nov 12.
Published in final edited form as: Am J Cardiol. 2005 Jun 15;95(12):1474–1477. doi: 10.1016/j.amjcard.2005.02.017

Figure 1.

Figure 1

Proportion of participants who had HRV in the lowest quartile according to presence (hemoglobin ≤ 12 g/dl, n = 90) (dark gray bars) and absence (n = 784) (light gray bars) of anemia. p <0.05 for association of anemia with all HRV indexes except high frequency. LnHF = natural-log high-frequency power; LnLF = natural-log low-frequency power; LnVLF = natural-log very-low-frequency power; LnWBF = natural-log wideband frequency power; SDANN = SD of 5-minute mean NN intervals; SDNN = SD of NN intervals.