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Table 3 QTc compared within groups

From: QTc interval-dependent body posture in pediatrics

QTc change within groupsSupine positionStanding positionDifferencep
Case group mean (ms)423.7(SD 27.4)443.5 (SD 39.5)19.70.004
Control group mean (ms)391.4 (SD 22.4)403.3 (SD 21.3)11.90.014
  1. Ms milliseconds, SD Standard deviation
  2. A significant change in QTc mean from supine to standing position for case- and control-group.