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Hazard ratios (HR), and 95% confidence intervals (CI), for cardiovascular hospitalization associated with adherence to antihypertensive drugs, after adjustment for the baseline characteristics. Meta-analytic procedures were used for summarized estimates. Adherence categories are: very low (PDC < 25%), low (25% ≤ PDC < 50%), intermediate (50 ≤ PDC ≤ 75%), and high (PDC >75).
