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Table 5 Baseline characteristics of the CardioBBEAT study participants - Diagnostic

From: First outline and baseline data of a randomized, controlled multicenter trial to evaluate the health economic impact of home telemonitoring in chronic heart failure – CardioBBEAT

Characteristic All patients n = 621 Usual care n = 319 (51 %) Monitoring n = 302 (49 %) p value
ECG     
  Heart rate (1/min) – number of patients (% valid) 616 (99) 315 (99) 301 (100)  
   mean ± SD 72 ± 14 72 ± 14 72 ± 13 0.862
   median (IQR) 71 (63–81) 71 (63–82) 71 (62–80)  
  Heart rhythm – number/total number (%)     0.031
   Sinus rhythm 379/619 (61) 185/318 (58) 194/301 (65)  
   Atrial fibrillation 78/619 (13) 46/318 (15) 32/301 (11)  
   Pacemaker ECG 154/619 (25) 86/318 (27) 68/301 (23)  
   Other 8/619 (1) 1/318 (0) 7/301 (2)  
  Conduction disorder – number/total number (%)     
   LBBB 145/543 (27) 69/272 (25) 76/271 (28) 0.543
   RBBB 49/544 (9) 28/273 (10) 21/271 (8) 0.383
  QRS duration (ms) – number of patients (% valid) 568 (92) 288 (90) 280 (93)  
   mean ± SD 123 ± 33 125 ± 34 121 ± 32 0.151
   median (IQR) 110 (100–144) 116 (100–150) 110 (100–140)  
2D echocardiography     
  LVEDD (mm) – number of patients (% valid) 584 (94) 297 (93) 287 (95)  
   mean (mm) ± SD 62 ± 9 62 ± 9 63 ± 9 0.580
   median (IQR) 62 (57–68) 62 (57–68) 62 (57–68)  
  LVEF (%) – number of patients (% valid) 619 (100) 317 (100) 302 (100)  
   mean ± SD 30 ± 7 31 ± 7 30 ± 8 0.580
   median (IQR) 31 (25–37) 31 (25–37) 30 (25–36)  
  Mitral insufficiency – number/total number (%)     0.319
   none 102/614 (17) 55/315 (18) 47/299 (16)  
   mild 370/614 (60) 180/315 (57) 190/299 (64)  
   moderate 121/614 (20) 70/315 (22) 51/299 (17)  
   severe 21/614 (3) 10/315 (3) 11/299 (4)  
6-minute walk test – number of patients (% valid) 559 (90) 284 (89) 275 (91)  
   mean (m) ± SD 375 ± 132 376 ± 132 374 ± 131 0.804
   median (IQR) 400 (300–458) 404 (300–455) 400 (300–460)  
  1. 2D two-dimensional, ECG electrocardiogram, IQR interquartile range, LBBB left bundle branch block,LVEDD left ventricular end-diastolic dimension, LVEF left ventricular ejection fraction, QRS combination of three of the graphical deflections seen on a typical ECG, RBBB right bundle branch block