Table 5 Mean Values for ECG Parameters for Children and Adolescents with or without History of Stimulant Treatment
From: Baseline values from the electrocardiograms of children and adolescents with ADHD
ECG Variable | Stimulant Naive (n = 2239) Mean (SD) | Stimulant Experienced (n = 3572) Mean (SD) | P value |
|---|---|---|---|
Heart Rate (bpm) | 77.5 (11.7) | 78.3 (12.7) | * |
RR Interval (ms) | 791.3 (121.4) | 786.6 (130.5) | |
PR Interval (ms) | 136.6 (18.7) | 136.1 (18.3) | |
QRS Interval (ms) | 82.0 (9.0) | 83.4 (9.6) | *** |
QT Interval (ms) | 366.2 (26.2) | 367.4 (29.0) | |
QTc | |||
Bazett (ms) | 413.1 (20.5) | 415.9 (21.1) | *** |
Data-derived (ms) | 401.4 (18.1) | 403.7 (19.0) | *** |
Fridericia (ms) | 396.8 (18.0) | 399.0 (19.1) | *** |