age, ambulation, nyha
Item
ambulatory individuals 18 years and older who had been diagnosed with chf (nyha functional classes ii-iv) for > 3 months
boolean
C0001779 (UMLS CUI [1])
C0080331 (UMLS CUI [2])
C1275491 (UMLS CUI [3])
left ventricular ejection fraction
Item
left ventricular ejection fraction (lvef) of ≤ 40 percent
boolean
C0428772 (UMLS CUI [1])
medication
Item
receiving indicated standard therapy (if not contraindicated or intolerant for > 3 months) defined as a diuretic, an ace-inhibitor or an angiotensin receptor blocker (arb) and a beta-blocke
boolean
C0013227 (UMLS CUI [1])
nyha, spironolactone, diuretics
Item
patients with nyha class iii or iv symptoms were also required to receive spironolactone. doses of these drugs had to be stable for ≥ 3 months, except for diuretics, for which ≥ 1 month of stability was required.
boolean
C1275491 (UMLS CUI [1])
C0037982 (UMLS CUI [2])
C0012798 (UMLS CUI [3])
comorbidity
Item
hemodynamically severe uncorrected primary valvular disease
boolean
C0009488 (UMLS CUI [1,1])
C0012798 (UMLS CUI [1,2])
comorbidity
Item
active myocarditis
boolean
C0009488 (UMLS CUI [1,1])
C0027059 (UMLS CUI [1,2])
comorbidity
Item
hypertrophic cardiomyopathy
boolean
C0009488 (UMLS CUI [1,1])
C0007194 (UMLS CUI [1,2])
comorbidity
Item
restrictive cardiomyopathy
boolean
C0009488 (UMLS CUI [1,1])
C0007196 (UMLS CUI [1,2])
comorbidity
Item
myocardial infarction, stroke, unstable angina, coronary artery bypass graft surgery, valvular surgery, or angioplasty < 3 months before randomization
boolean
C0009488 (UMLS CUI [1,1])
C0007222 (UMLS CUI [1,2])
comorbidity
Item
symptomatic or sustained ventricular tachycardia not controlled by antiarrhythmic drugs or an implantable cardioverter-defibrillator
boolean
C0009488 (UMLS CUI [1,1])
C0042514 (UMLS CUI [1,2])
comorbidity
Item
any condition other than heart failure that would be expected to limit exercise (e.g., angina, peripheral vascular disease, pulmonary disease, arthritis, or an orthopedic problem severe enough to limit exercise)
boolean
C1321605 (UMLS CUI [1,1])
C0439801 (UMLS CUI [1,2])
C0009488 (UMLS CUI [1,3])
pregnancy, breastfeeding
Item
nursing mothers, pregnant women and those planning a pregnancy during the study period
boolean
C0032961 (UMLS CUI [1])
C0006147 (UMLS CUI [2])