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Table 1 Baseline characteristics of patients by heart rate recovery (HRR) on exercise treadmill testing (n = 8236)

From: Impaired heart rate recovery is associated with new-onset atrial fibrillation: a prospective cohort study

  Impaired HRR n = 2425 Normal HRR n = 5811 P value
Demographics    
Age, median (25th, 75th percentiles), y 63 (54, 70) 54 (47, 63) < 0.0001
Male, No. (%) 1199 (49.4) 3113 (53.6) < 0.001
ETT indications    < 0.0001
Chest pain 451 (18.6) 984 (16.9)  
Atypical chest pain 920 (37.9) 2953 (50.8)  
Risk stratification 200 (8.3) 354 (6.1)  
Screening 272 (11.2) 580 (10.0)  
Other 582 (24.0) 940 (16.2)  
Clinical History    
Hypertension, No. (%) 1552 (64) 2487 (42.8) < 0.0001
Diabetes Mellitus, No. (%) 546 (22.5) 619 (10.7) < 0.0001
Lipid disease, No. (%) 1677 (69.2) 3611 (62.1) < 0.0001
Current or recent smoking, No. (%) 393 (16.2) 741 (12.8) < 0.0001
Obese (BMI > = 30), No. (%) 1026 (42.3) 1736 (29.9) < 0.0001
Coronary artery disease, No. (%) 450 (18.6) 629 (10.8) < 0.0001
Congestive heart failure, No. (%) 74 (3.1) 43 (0.7) < 0.0001
COPD, No. (%) 237 (9.8) 145 (2.5) < 0.0001
Mitral valve disease, No. (%) 58 (2.4) 99 (1.7) 0.04
Medications    
ACE inhibitor use, No. (%) 596 (24.6) 800 (13.8) < 0.0001
Beta-blocker use, No. (%) 743 (30.6) 1213 (20.9) < 0.0001
- within 72 hours of ETT 558 (23) 929 (16) < 0.0001
Statin use, No. (%) 714 (29.4) 1213 (20.9) < 0.0001
Calcium channel blocker use, No. (%) 195 (8) 214 (3.7) < 0.0001
  1. ACE – angiotensin converting enzyme
  2. BMI – body mass index
  3. COPD – chronic pulmonary obstructive disease