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Table 1 Characteristics of trials included in the meta-analysis

From: Influence of diabetes on cardiac resynchronization therapy in heart failure patients: a meta-analysis

  Kiès et al. 2005 [9] Ghali et al. 2007 [2010] Hoppe et al. 2007 [11] Fantoni et al. 2008 [12] Mangiavacchi et al. 2008[13]
No. of patients randomized 97 1211 813 355 447
Age, mean, y 63 66 67 63 ± 9 65.7 ± 9.7
Men, % 77 67 74 75 81
LVEF, mean, % 22 22 25 21.2 ± 6.2 28.9 ± 6.1
NYHA functional class, range III-IV III-IV III-IV III-IV II-IV
Ischemic cardiomyopathy, % 62 55 40 47 54
QRS duration, mean, ms 176 158 160 163 166
ACEI inhibitor or ARB, % 88 88 95 98 99.3
insulin-treated diabetic patients, (%) 9 (28.1) - 85 (10.5) 57 (40.4) 29 (31.9)
Follow-up, randomized, mo 6 12 36.4 35 36