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Table 5 Comparison of heart rate variability between boy and girl in research group

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

Indicator Boy group Girl group t P
Age (year) 12.01 ± 0.31 12.89 ± 0.28 1.891 0.089
SDNN (ms) 155.30 ± 3.21 142.58 ± 3.48 3.008 0.003
SDANN (ms) 148.21 ± 3.86 139.11 ± 4.50 0.956 0.451
rMSSD (ms) 79.55 ± 3.85 78.21 ± 3.69 0.781 0.487
pNN50 (%) 31.25 ± 1.26 29.91 ± 1.69 1.112 0.361
CV 0.11 ± 0.00 0.10 ± 0.00 1.460 0.189
TP 11,231.12 ± 445.21 1023.15 ± 397.13 3.921 0.002
ULF 6541.20 ± 451.23 4895.27 ± 401.23 2.361 0.002
VLF 3789.40 ± 230.78 2891.47 ± 309.87 3.561 0.001