ID.1
Item
left ventricular ejection fraction (ef) <50%, or heart failure with preserved ef
boolean
ID.2
Item
age 18-89
boolean
ID.3
Item
inclusion criteria (controls)
boolean
ID.4
Item
no history or evidence of heart failure
boolean
ID.5
Item
age 18-89
boolean
ID.6
Item
severe obstructive respiratory disease
boolean
ID.7
Item
unstable heart failure status
boolean
ID.8
Item
recent use of positive airway pressure therapy
boolean
ID.9
Item
current use of opioids, benzodiazepines
boolean
ID.10
Item
severe kidney disease
boolean
ID.11
Item
severe anemia
boolean