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Table 2 Comparison of time domain indices of HRV (Mean ± SEM, n=53)

From: Altered cardiac autonomic nervous function in depression

Indexes (ms2) Depression Control
SDNN 93.13 ± 16.12** 110.57 ± 20.10
SDANN 84.34 ± 15.46* 91.09 ± 12.69
RMSSD 38.83 ± 8.82* 43.64 ± 11.01
PNN50 11.05 ± 7.32* 14.07 ± 6.72
  1. Note: compared to control group, *P<.05,** P<.01.