MRI-based radiomics to predict response in locally advanced rectal cancer: comparison of manual and automatic segmentation on external validation in a multicentre study

European Radiology Experimental

Table 2 Patient and tumour data

	Total	Construction	Validation
Number of patients	95	67	28
Number of patients per centre
Centre A	44	44	–
Centre B	23	23	–
Centre C	28	–	28
Sex	58 M 37 F	43 M 24 F	15 M 13 F
Median age, years [IQR]	64 [34–86]	64 [34–86]	64 [35–83]
TRG
1	16	9	7
2	26	18	8
3	26	18	8
4	27	22	5
5	0	0	0
Median of tumour volume (cc) [IQR]	21.3 [2.8–232.2]	23.8 [2.8–232.2]	15.4 [3.5–66.7]