Duke Treadmill Score: Prediction Of Coronary Heart Disease In A Patient With Chest Pain Undergoing A Treadmill Stress Test  
  NOTE: This score is not applicable if patient is known to have CHD.  
  Exercise Test variables  
  Exercise Time - In Minutes - Standard Bruce Protocol min    
  Maximum ST deviation - In mm - At 80 msec after the J-Point mm (always a positive figure, no matter if positive or negative deviation)  
  Angina Score During Exercise      
  Duke Treadmill Score  
  Probability of Significant CHD probability of >75% stenosis in at least 1 coronary artery  
  Probability of Severe CHD probability of 3 vessel CHD or >75% LMS  
  5-Year Mortality  
  Overall risk subcategory  
  (1) Mark DB et al  NEJM 1991;325:849-53 and Ann Intern Med 1987;106:793-800    
     Study dataset n=2842 (ExECG within 6 weeks of Cor Angio)  
     70% Male, median age 49yr (10-90% centiles 37-60)  
     Training sample n=1422, Validation sample n=1420  
  (2) Shaw LJ et al  Circulation 1998;98:1622-30  
     Study dataset n=2758 (ExECG within 6 weeks of Cor Angio)  
     70% Male, median age 49yr, 30% prior MI, 47% typical angina, 61% had significant CHD at Angio  
     Training sample n=2758, Validation sample n=467      
  ROC for predicting significant CHD = 0.76 for DTS, 0.91 for post-test DTS + Clinical score    
  Designed by Dr John Bayliss (1999-2002)  v11   West Hertfordshire Cardiology, Hemel Hempstead Hospital, Herts  HP2 4AD  


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