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. 2021 Aug 30;17(4):920–928. doi: 10.4103/1673-5374.322464

Additional Table 2.

Absolute and relative power of the heart rate variability bands in the three groups

Healthy (n=17) Premature (n=14) HIE (n=19) Total (N=50)
HF
 Range 4.4 -9.9 4.0 -8.5 5.6 -9.1 4.0 -9.9
 Median (IQR) 7.6 (6.8, 8.4) 7.3 (6.8, 8.1) 7.7 (7.0, 8.2) 7.6 (6.8, 8.2)
 Mean (SD) 7.5 (1.4) 7.2 (1.2) 7.5 (1.0) 7.5 (1.2)
LF
 Range 5.3 -9.2 5.0 -8.2 6.1 -8.2 5.0 -9.2
 Median (IQR) 7.6 (7.1, 7.8) 7.3 (7.0, 7.7) 7.3 (7.0, 7.8) 7.4 (7.0, 7.8)
 Mean (SD) 7.5 (1.0) 7.1 (0.9) 7.3 (0.6) 7.3 (0.8)
VLF
 Range 5.8 -8.7 4.7 -7.5 6.0 -8.0 4.7 -8.7
 Median (IQR) 6.7 (6.4, 7.4) 6.8 (5.8, 7.1) 6.7 (6.5, 7.1) 6.8 (6.4, 7.3)
 Mean (SD) 7.0 (0.9) 6.5 (0.8) 6.8 (0.6) 6.8 (0.8)
HF%
 Range 23.6 -72.6 26.2 -79.3 24.0 -71.9 23.6 -79.3
 Median (IQR) 53.8 (48.9, 57.1) 50.8 (45.0, 62.1) 60.2 (50.9, 65.4) 56.2 (48.3, 62.9)
 Mean (SD) 51.6 (11.8) 52.7 (13.9) 55.9 (13.6) 53.5 (13.0)

HIE: Hypoxic-ischemic encephalopathy; HF: high frequency; IQR: interquartile range; LF: low frequency; SD: standard deviation; VLF: very low frequency.