colonoscopy
Item
all patients presenting for colonoscopy after 1997
boolean
C0009378 (UMLS CUI [1])
age
Item
age 80 or older for the study group
boolean
C0001779 (UMLS CUI [1])
age
Item
age 50-79 for the control group
boolean
C0001779 (UMLS CUI [1])
colonoscopy indication
Item
indications for colonoscopy:
boolean
C0009378 (UMLS CUI [1,1])
C3146298 (UMLS CUI [1,2])
colorectal carcinoma screening
Item
average risk screening for crc
boolean
C0009402 (UMLS CUI [1,1])
C0086930 (UMLS CUI [1,2])
C0220908 (UMLS CUI [1,3])
colorectal polyps
Item
surveillance of polyps (tubular adenomas)
boolean
C0949059 (UMLS CUI [1])
colonoscopy indication
Item
any colonoscopy done for symptoms (abdominal pain, weight loss, hematochezia, occult blood in stool, etc) or signs (iron deficiency anemia)
boolean
C0009378 (UMLS CUI [1,1])
C3146298 (UMLS CUI [1,2])
colorectal carcinoma family history risk
Item
patients who are not average risk based on family history of crc
boolean
C0009402 (UMLS CUI [1,1])
C0241889 (UMLS CUI [1,2])
C0086930 (UMLS CUI [1,3])
ulcerative colitis, crohn disease
Item
diagnosis of ulcerative colitis or crohn's disease
boolean
C0009324 (UMLS CUI [1])
C0010346 (UMLS CUI [2])
history of colorectal carcinoma
Item
history of crc
boolean
C0262926 (UMLS CUI [1,1])
C0009402 (UMLS CUI [1,2])
incomplete colonoscopy
Item
exams that were not completed to the cecum (except in cases of obstructing masses found to be neoplastic) or poor bowel preparation limiting visualization of the mucosa
boolean
C2921669 (UMLS CUI [1])