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Table 1 Clinical characteristics of the studies included in the analysis

From: Left ventricular contractile reserve by stress echocardiography as a predictor of response to cardiac resynchronization therapy in heart failure: a systematic review and meta-analysis

  Patients (n.) Age (years) Sex (male, %) Ischemic etiology (%) QRS duration (ms) Follow-Up (months) Responders CRT Criteria
Da Costa A [8] 67 70 ± 10 84% 34% 190 ± 28 12 clinical
Rocchi G [9] 64 64 ± 11 75% 31% 154 ± 25 6 echo/clinical
Ciampi Q [10] 59 70 ± 8 71% 55% 150 ± 27 11 echo/clinical
Lancellotti P [11] 51 70 ± 9 63% 67% 161 ± 25 6 echo/clinical
Senechal M [12] 49 66 ± 12 69% 69% 164 ± 30 6 echo/clinical
Chaundry FA [13] 54 69 ± 11 63% 54% 147 ± 20 7 echo/clinical
Altman RK [14] 31 68 ± 12 74% 65% 158 ± 22 24 echo/clinical
Gasparini M [15] 204 67 ± 10 70% 43% 150 ± 25 15 echo/clinical
Pugliese M [16] 102 71 ± 5 64% 87% 143 ± 11 6 echo/clinical
Mizia-Stec K [17] 129 62 ± 9 76% 48% 164 ± 24 12 echo/clinical
Murin P [18] 51 62 ± 8 75% 48% 150 ± 24 6 echo/clinical
Mean Value 78 67 ± 9 71% 55% 157 ± 24 10