Noninvasive Method for Predicting the Expression of Ki67 and Prognosis in Non-Small-Cell Lung Cancer Patients: Radiomics

Table 1

Clinical characteristics of patients.

Clinical features	Total	Training dataset	Test dataset
No. of patients	120	85	35
Mean age (95% CI)	55.58 (53.19–57.98)	55.46 (52.63–58.29)	55.87 (51.18–60.59)
Sex
Male	74 (62%)	51 (60%)	23 (66%)
Female	46 (38%)	34 (40%)	12 (34%)
TNM stage
I	39 (33%)	25 (29%)	14 (40%)
II	60 (50%)	46 (54%)	14 (40%)
III	21 (17%)	14 (17%)	7 (20%)
Lobulation
Yes	84 (70%)	62 (73%)	22 (63%)
No	36 (30%)	23 (27%)	13 (37%)
Spiculation
With	61 (51%)	40 (47%)	21 (60%)
Without	59 (49%)	45 (53%)	14 (40%)
Shape
Irregular	59 (49%)	38 (45%)	21 (60%)
Regular	61 (51%)	47 (55%)	14 (40%)
Boundary pleural
Invasion	75 (63%)	52 (61%)	23 (66%)
Noninvasion	45 (37%)	33 (39%)	12 (34%)