The recommendation from the 2014 National Heart, Lung, and Blood Institute guidelines 1 to treat all adults with sickle cell anemia (SCA) and 3 or more moderate to severe pain crises within 1 year with hydroxyurea was rated as strong based on high-quality evidence reviewed in 2008. 2,3 Despite benefits in reducing pain crises, hospitalizations, blood transfusions, and possibly mortality, it is thought that hydroxyurea is underused, although the extent of its use is unknown. 2 We sought to document the use of hydroxyurea when indicated for SCA in a large insurance claims database. a Data are expressed as No. (%) [95% CI] unless otherwise indicated.

Under the Comprehensive End-stage Renal Disease (ESRD) Care (CEC) Model, dialysis facilities and nephrologists form ESRD Seamless Care Organizations (ESCOs) to deliver high value care. This study compared the characteristics of patients and markets served and unserved by CEC and assessed its generalizability. ESCOs operated in 65 of 384 markets. ESCO markets were larger than non-ESCO markets, had fewer White patients, higher household income, and higher Medicare spending per patient. Patients in ESCOs were similar to eligible nonaligned patients in age and sex but differed in race/ethnicity and were more often treated in an urban area; comorbidity prevalence differed modestly. CEC is available to a meaningful share of the dialysis population and relatively few dialysis patients resided in a market where no provider could meet the participation threshold, so market size may not be the primary barrier for potential new participants in CEC or future kidney care models.