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Table 1 Population characteristics – demographics

From: QTc interval-dependent body posture in pediatrics

VariablesCases N = 17Controls N = 34p
Weight mean (kg)35.0 (SD 22.3)38.8 (SD 20.8)0.552
Height mean (cm)134.2 (SD 24.9)136.6 (SD 24.4)0.745
Female n (%)9/17 (53%)18/34 (53%)1.00
Male n (%)8/17 (47%)16/34 (47%)1.00
Age mean (years)9.0 (SD 4.2)9,4 (SD 4.2)0.724
Beta-blocker therapy n (%)17/17 (100%)0/34 (0%)< 0.001
Systolic BP mean (mm Hg)100.7 (SD 8.3)109.1 (SD 13.3)0.021
Diastolic BP mean (mm Hg)56.0 (SD 10.5)69.8 (SD 12.2)< 0.001
Medications on LQTS avoid list n (%)4/17 (23.5%)3/34 (8.8%)0.203
Other medications n (%)4/17 (23.5%)16/34 (47.0%)0.135
Occasional medications n (%)3/17 (17.6%)12/34 (35.2%)0.328
Heredity for LQTS n (%)17/17 (100%)0/34 (0%)< 0.001
History of syncope n (%)1/17 (5.8%)2/34 (5.8%)1.00
Asthma n (%)6/17 (35%)6/34 (17%)0.181
Diabetes n (%)0/17 (0%)5/34 (14.7%)0.156
Other diseases n (%)3/17 (17.6%)9/34 (26.4%)0.728
  1. BP Blood pressure, LQTS Long-QT syndrome