Table 3.

Newly defined NCRI Data Elements.

Element name	Definition	Value Domain
Chronic lung disease – Home oxygen therapy	Indicate if, the patient has been receiving home oxygen therapy for treatment of chronic lung disease.	Yes No
Sleep apnea – sleep study diagnosis	Indicate if the sleep apnea was diagnosed by a sleep study.	Yes No
Smoked tobacco type	Indicate the type of smoked tobacco.	Cigars Cigarettes Pipes
Smokeless tobacco	Indicate the use of smokeless tobacco.	Yes No
Undetermined stroke	Defined as a stroke with insufficient information to allow categorization as an ischemic or hemorrhagic stroke.	Yes No
At-home medications	Indicate if the medication was taken or started at home.	Yes No
Blinded	Indicate if the medication use was blinded.	Yes No
Contraindicated	Indicate if the medication was contraindicated.	Yes No
Medications held or discontinued	Indicate if the medication was held or discontinued.	Yes No