Fig. 1

Study Sample. Attrition of CHF patients from the study sample: All adult MHS members (age ≥21 year) who entered MHS’ CHF registry between January 2006 and December 2012 were eligible for the current study. We assessed 6,592 patients among the 10,276 patients entering the CHF registry. A total of 3,684 were excluded due to one or more of the following: first CHF indication not between 2006 and 2012; EF <40% reported >6 months before diagnosis; <1 year MHS enrollment before diagnosis; they had right heart failure; they did not have a prescription or dispensation of a diuretic; or exited MHS or died within the first year following diagnosis