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Table 2 Comparison of heart rate variability between research group and control group

From: Ambulatory blood pressure monitoring in children suffering from orthostatic hypertension

Indicator Control group Research group t P
SDNN (ms) 121.31 ± 32.54 154.23 ± 9.56 3.795 0.000
SDANN (ms) 122.96 ± 5.40 142.68 ± 3.21 4.127 0.002
rMSSD (ms) 76.08 ± 3.21 77.52 ± 3.62 1.238 0.301
pNN50 (%) 26.30 ± 4.52 27.51 ± 2.36 1.542 0.181
CV 0.12 ± 0.000 0.12 ± 0.000 0.310 0.823
TP 9532.21 ± 452.13 12,311.25 ± 411.23 3.421 0.001
ULF 4231.10 ± 369.21 6987.48 ± 398.41 4.259 0.000
VLF 2896.41 ± 231.41 3961.80 ± 357.12 2.361 0.010