2.2. Patient selection
constipation, diarrhea, abdominal pain
COLORECTAL CANCER, UNCONTROLLED HYPERTENSION
Patients with asymptomatic or nonspecific symptoms in the digestive system (mild abdominal pain, diarrhea, constipation, etc) were screened for enrollment in the trial. All patients were required to be between 45 and 80 years of age. The exclusion criteria were as follows: those under 45 or over 80 years old, family history of colorectal cancer, history of colonoscopy in recent 5 years, history of previous abdominal surgery, pregnancy, uncontrolled hypertension, or involvement in other studies within the past 60 days. (see Supplemental Digital Content A, 