Metabolic and inflammatory indices in colorectal adenoma: A real-world colonoscopy cohort study

Table 1 Baseline characteristics and colonoscopy findings of the study population, median (interquartile range)/n (%)

Variable	Study population (n = 1570)
Age (years)	61 (51-70)
Sex
Male	773 (49.2)
Female	797 (50.8)
Colonoscopy findings
Normal colonoscopy	995 (63.4)
Adenoma present	395 (25.2)
Diverticulosis	52 (3.3)
Benign ulceration	33 (2.1)
Polyp histology
Tubular adenoma	306 (19.5)
Tubulovillous adenoma	47 (3.0)
Villous adenoma	7 (0.4)
Adenoma, subtype not specified	35 (2.2)
Hyperplastic polyp	78 (5.0)
Inflammatory polyp	29 (1.8)
Polyp localization
Rectum	90 (5.6)
Sigmoid colon	106 (6.6)
Descending colon	52 (3.2)
Splenic flexure	7 (0.4)
Transverse colon	63 (3.9)
Ascending colon	35 (2.2)
Cecum	18 (1.1)
Hepatic flexure	4 (0.2)

Percentages were calculated based on the final analytic cohort. Patients with colorectal malignancy, inflammatory bowel disease, prior colorectal surgery, undefined colonoscopy findings, and invalid demographic records were excluded before final analyses. Due to the retrospective cohort design, some patients had multiple non-neoplastic colonoscopic findings. Polyp localization frequencies may exceed the number of adenoma patients because some individuals had multiple lesions involving different colonic segments.