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Table 1 Clinicopathologic characteristics of patients

From: Prognosis of lung cancer with simple brain metastasis patients and establishment of survival prediction models: a study based on real events

Clinicopathologic parameters

Number of cases

Average survival (month)

95% CI

χ2

p

n

%

Age

    

163.160

 < 0.001

  18–65

2071

54.41

15.061

14.107–16.014

  

    ≥ 66

1735

45.59

8.806

8.070–9.542

  

Marital status

    

43.985

 < 0.001

  Non-married

1786

46.93

10.377

9.550–11.205

  

  Married

2020

53.07

13.808

12.890–14.727

  

Primary site

    

10.727

0.013

  Main bronchus

187

4.91

9.0410

6.979–11.102

  

  Upper lobe, lung

2390

62.80

12.503

11.708–13.299

  

  Middle lobe, lung

170

4.47

13.994

10.790–17.198

  

  Lower lobe, lung

1059

27.82

11.686

10.520–12.852

  

Race

    

16.999

 < 0.001

  White

2978

78.24

11.861

11.172–12.549

  

  Black

510

13.40

11.708

10.061–13.355

  

  Other

318

8.36

15.783

13.418–18.148

  

Surgery

    

184.795

 < 0.001

  No surgery

3463

90.99

10.550

9.978–11.121

  

  Surgery

343

9.01

28.233

25.065–31.401

  

Gender

    

31.990

 < 0.001

  Male

1970

51.76

10.804

10.008–11.600

  

  Female

1836

48.24

13.706

12.746–14.667

  

Grade

    

71.301

 < 0.001

  I

140

3.68

19.020

14.870–23.170

  

  II

880

23.12

15.229

13.807–16.651

  

  III

2446

64.27

10.996

10.270–11.722

  

  IV

340

8.93

9.712

8.026–11.398

  

Laterality

    

0.475

0.491

  Left

1596

41.93

12.216

11.293–13.138

  

  Right

2210

58.07

12.153

11.318–12.988

  

Histologic type

    

98.416

 < 0.001

  Squamous cell carcinoma

555

14.58

8.131

7.085–9.176

  

  Adenocarcinoma

2201

57.83

14.318

13.411–15.225

  

  Small cell lung cancer

335

8.80

9.832

8.156–11.507

  

  Large cell carcinoma

101

2.65

8.456

6.289–10.623

  

  Others

614

16.13

10.049

8.656–11.442

  

T stage

    

58.295

 < 0.001

  T1

430

11.30

16.512

14.280–18.744

  

  T2

1283

33.71

13.424

12.311–14.537

  

  T3

1014

26.64

10.74

9.625–11.855

  

  T4

1079

28.35

10.234

9.219–11.248

  

N stage

    

25.029

 < 0.001

  N0

1078

28.32

14.532

13.183–15.882

  

  N1

400

10.51

12.973

11.025–14.921

  

  N2

1778

46.72

11.123

10.302–11.943

  

  N3

550

14.45

10.118

8.739–11.496

  

Overall

3806

100.00

12.234

11.604–12.864

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