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Table 3 Odds ratios of having normal or abnormal ECG findings in marathon runners with good performance using the runners with poor performance as reference

From: Prevalence of abnormal and borderline electrocardiogram changes in 13, 079 Chinese amateur marathon runners

  OR 95% confidence interval
Normal ECG 1.346 1.261–1.438
Sinus bradycardia 1.518 1.409–1.636
Sinus arrhythmia 1.010 0.899–1.135
left ventricular high voltage 1.436 1.233–1.672
1° AVB 1.702 1.034–2.804
Incomplete RBBB 0.803 0.606–1.065
right axis deviation 0.917 0.717–1.174
left axis deviation 0.869 0.611–1.236
  1. Note: Age, gender, weight status were adjusted in the logistic regression model
  2. AVB Atrioventricular block, RBBB Right bundle branch block