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Table 1 Number of cases used in this study according to sample groups

From: Caveolin-1 enhances brain metastasis of non-small cell lung cancer, potentially in association with the epithelial-mesenchymal transition marker SNAIL

Variables

Group 1

Group 2

Group 3

Group 4

Age (mean 62.7 years)

 < 63

49

24

34

26

 ≥ 63

56

25

65

37

Sex

 Male

81

39

76

50

 Female

24

10

23

13

Histological type

 SQC

27

19

29

25

 ADC

62

24

56

31

 LCC

16

6

14

7

 Total

105a

49b

99

63

  1. Group 1—Cases of BM from NSCLC
  2. Group 2—Primary lung carcinoma cases paired to Group 1 cases
  3. Group 3—Primary lung carcinoma cases without metastasis
  4. Group 4—Primary lung carcinoma cases with distant metastasis to organs other than brain
  5. SQC, squamous cell carcinoma; ADC, adenocarcinoma; LCC, large cell carcinoma
  6. aComposed of 102 cases with open brain surgery and 3 cases with gamma knife radiosurgery (lung primary samples only)
  7. bNot including 3 patients underwent gamma knife radiosurgery