Cardiovascular disease history and β-blocker prescription patterns among Japanese and American patients with CKD: a cross-sectional study of the CRIC and CKD-JAC studies.
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Cardiovascular disease (CVD) is a major complication in individuals with chronic kidney disease (CKD). In Japan, the incidence of CVD among persons with CKD is lower than that in the United States. Although various classes of antihypertensive agents are prescribed to prevent CVD, the proportion varies between the United States and Japan. Until now, few studies have compared clinical practices and CVD prevalence among patients with CKD in the United States vs. Japan. In this study, we performed a cross-sectional comparison of the prevalence of CVD and the prescription of β-blockers at study entry to the Chronic Kidney Disease Japan Cohort (CKD-JAC) Study and the Chronic Renal Insufficiency Cohort (CRIC) Study. The mean patient age was 58.2 and 60.3 years, the mean estimated glomerular filtration rate (eGFR) was 42.8 and 28.9 (mL/min/1.73 m2), and the median urinary albumin:creatinine ratio was 51.9 and 485.9 (mg/g) among 3939 participants in the CRIC Study and 2966 participants in the CKD-JAC Study, respectively. The prevalence of any CVD according to a self-report (CRIC Study) was 33%, while that according to a medical chart review (CKD-JAC Study) was 24%. These findings were consistent across eGFR levels. Prescriptions for β-blockers differed between the CRIC and CKD-JAC Studies (49% and 20%, respectively). The odds ratios for the association of any history of CVD and β-blocker prescription were 3.0 [2.6-3.5] in the CRIC Study and 2.0 [1.6-2.5] in the CKD-JAC Study (P < 0.001 for the interaction). In conclusion, the prevalence of CVD and treatment with β-blockers were higher in the CRIC Study across eGFR levels.
