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Figure 4 Effect of CRT on the HF Clinical Composite Response of Worsened in Subgroups

Analysis of the percentage worsened in the HF clinical composite response using odds ratios and 95% confidence intervals is shown. Lower odds ratios favor CRT-ON. An odds ratio of 0.5 means the odds of a patient being in worsened condition are half as high in the CRT-ON group as the CRT-OFF group. The subgroups of age, systolic blood pressure, ejection fraction, end-systolic volume index, QRS width, interventricular mechanical delay, and glomerular filtration rate are divided according to the median value in the study sample. Because of missing baseline data, not all subgroup numbers equal a total of 610. Abbreviations as in Figures 1, 2, and 3.