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Table 1 Characteristics baseline of patients in the total cohort

From: Preoperative CT-based radiomics combined with tumour spread through air spaces can accurately predict early recurrence of stage I lung adenocarcinoma: a multicentre retrospective cohort study

 

Development Cohort (226)

Validation cohort (51)

P value

Training Set (164)

Test Set (62)

Age

   

0.543

 Mean ± SD

61.1 ± 8.7

63.9 ± 6.4

60.7 ± 9.2

 

Gender

   

0.017

 Male (%)

80(48.8)

35(56.5)

36(70.6)

 

 Female (%)

84(51.2)

27(43.5)

15(29.4)

 

Pathological TNM stage

   

0.319

 IA (%)

102(62.2)

38(43.5)

36(70.6)

 

 IB (%)

62(37.8)

24(56.5)

15(29.4)

 

Grade stage

   

0.062

 1(%)

87(53.1)

35(56.5)

31(60.8)

 

 2(%)

15(9.1)

9(14.5)

10(19.6)

 

 3(%)

62(37.8)

18(29.0)

10(19.6)

 

STAS

   

0.099

 Yes (%)

91(55.5)

27(43.5)

26(51.0)

 

 No (%)

73(44.5)

35(56.5)

25(49.0)

 

RFS status

   

-

 Relapse (%)

25(15.2)

8(12.9)

10(19.6)

 

 No relapse (%)

139(84.8)

54(87.1)

41(80.4)

 

RFS time (Month)

   

-

 Median (IQR)

40.2(34.5–51.9)

40.9(35.5–50.5)

38.7(35.4–40.6)

 
  1. SD Standard deviation, STAS Spread through air spaces, RFS Recurrence free survival, IQR Interquartile range
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