Serum Peptidome Patterns of Colorectal Cancer Based on Magnetic Bead Separation and MALDI-TOF Mass Spectrometry Analysis

Table 1

Clinical characteristics of colorectal cancer patients recruited in model construction group and external evaluation group.

Clinical characteristics	Model construction group (𝑛=38)	External evaluation group (𝑛=34)	𝑃 value
Gender: female/male	23/15	19/15	0.690
Age (years, 𝑋±SD)	62.00 ± 10.95	61.74 ± 11.61	0.854
TNM stage			0.858
I	5	5
II	18	15
III	11	12
IV	4	2
Tumor localization			0.292
Colon	24	21
Rectum	14	13