From: Baseline values from the electrocardiograms of children and adolescents with ADHD
ECG Variable | Mean (sd) | 1st %ile | 5th %ile | Median | 95th %ile | 99th %ile |
---|---|---|---|---|---|---|
Heart Rate (bpm) | 70.8 (11.4) | 48.0 | 52.0 | 70.0 | 91.0 | 102.0 |
RR Interval | 870.3 (144.3) | 588.2 | 659.3 | 857.1 | 1153.8 | 1250.0 |
PR Interval (ms) | 140.8 (18.9) | 104.0 | 116.0 | 140.0 | 176.0 | 192.0 |
QRS Interval (ms) | 87.8 (9.9) | 70.0 | 72.0 | 88.0 | 104.0 | 112.0 |
QT Interval (ms) | 382.9 (29.0) | 328.0 | 340.0 | 380.0 | 432.0 | 470.0 |
QTc Bazett (ms) | 412.2 (20.7) | 350.0 | 376.0 | 413.0 | 444.0 | 457.0 |
QTc Data-derived (ms) | 405.0 (18.5) | 357.2 | 371.6 | 406.5 | 433.0 | 447.5 |
QTc Fridericia (ms) | 402.1 (18.5) | 354.5 | 371.1 | 402.6 | 430.9 | 446.5 |