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Table 3 Group averages of HRV (time domain) for edited and unedited data, respectively, when calculated before and after filtering with the age-based threshold.

From: Automatic filtering of outliers in RR intervals before analysis of heart rate variability in Holter recordings: a comparison with carefully edited data

  Before filtering After filtering
  Edited data Unedited data Edited data Unedited data
SDNN (ms) (Age-group: p < 0.001, SS = 110402; Method: p = 0.81, SS = 1202)
Subjects 1-14 years (N = 25) 157 (40.8) 253 (210) 155 (40.8) 156 (40.9)
Subjects 15-24 years (N = 32) 197 (50.1) 213 (86.3) 197 (50.0) 198 (49.8)
Subjects 25-49 years (N = 40) 162 (34.5) 266 (435) 161 (34.2) 162 (34.4)
Subjects 50-75 years (N = 43) 167 (97.9) 190 (113) 153 (46.7) 154 (46.7)
RMSSD (ms) (Age-group: p < 0.001, SS = 88214; Method: p = 0.002, SS = 1299)
Subjects 1-14 years (N = 25) 64.8 (33.9) 133 (198) 60.0 (30.4) 60.1 (30.3)
Subjects 15-24 years (N = 32) 66.6 (29.8) 103 (126) 64.3 (27.9) 64.9 (27.8)
Subjects 25-49 years (N = 40) 42.1 (18.5) 118 (257) 40.5 (16.9) 41.1 (16.7)
Subjects 50-75 years (N = 43) 35.0 (30.0) 84.8 (93.2) 27.6 (15.3) 28.1 (15.3)
pNN50(%) (Age-group: p < 0.001, SS = 27941; Method: p < 0.001, SS = 9.4)
Subjects 1-14 years (N = 25) 26.7 (13.8) 26.9 (13.7) 26.1 (13.4) 26.0 (13.3)
Subjects 15-24 years (N = 32) 27.3 (12.9) 27.6 (12.9) 27.1 (12.7) 27.2 (12.7)
Subjects 25-49 years (N = 40) 15.7 (9.8) 16.3 (9.7) 15.6 (9.7) 15.7 (9.7)
Subjects 50-75 years (N = 43) 7.9 (10.3) 8.9 (10.2) 7.4 (9.3) 7.5 (9.2)
  1. See Table 1 for details.
  2. Data are given as mean (SD).