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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