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Table 1 Parameters of the heart rate variability and deep breathing test.

From: Respiratory sinus arrhythmia is reduced in adolescent major depressive disorder

Parameter Depression group Control group Probability
R-R interval (ms) 800 ± 34 888 ± 26 P = 0.053
logHF-HRV (ms2) 6.16 ± 0.29 7.09 ± 0.26 P = 0.026
I-E (bpm) 26.74 ± 2.73 34.93 ± 1.81 P = 0.021
I/E 1.39 ± 0.05 1.59 ± 0.03 P = 0.006
  1. Values are means ± SE, logHF-HRV - logarithmic values of spectral powers in high (HF) bands, I - inspiration, E - expiration.