Age
Item
Age >= 60 years
boolean
C0001779 (UMLS CUI [1])
Low Dose ASA
Item
A clinical diagnosis of a condition (cardiovascular and/or cerebrovascular protection or other reasons) that requires daily intake of low-dose ASA, 75-325 mg, and is expected to continue for the duration of the study (daily is defined as at least 5 days per week)
boolean
C0721444 (UMLS CUI [1])
No gastric or duodenal ulcer
Item
No gastric and/or duodenal ulcer at the baseline endoscopy
boolean
C3843755 (UMLS CUI [1,1])
C3640974 (UMLS CUI [1,2])
H. pylori negative
Item
H. pylori negative by serology test at screening
boolean
C1167693 (UMLS CUI [1])