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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Exp Physiol. 2017 May 26;102(7):764–772. doi: 10.1113/EP086228

Figure 2. Scatterplot of left ventricular mass index (LVMI) and resting high-frequency heart rate variability (HF-HRV) in African Americans (filled triangles, continous line) compared with Whites (open squares, dashed line).

Figure 2

The simple slope for HF-HRV predicting LVMI was significant for African Americans (P = 0.002) but not for Whites (P = 0.919).