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Table 2 Recurrence free survival (RFS) by patient characteristics

From: Perioperative blood transfusions and survival in patients with non-small cell lung cancer: a retrospective study

Variable

Level

N

Event

Median RFS time in months (95% CI)

RFS rate at 3 years (95% CI)

RFS rate at 5 years (95% CI)

P-value

All patients

599

277

68.79 (61.4,81.8)

0.65 (0.61,0.69)

0.54 (0.5,0.59)

Age (years)

< 66

277

107

81.7 (74.24,NA)

0.69 (0.64,0.75)

0.61 (0.55,0.67)

0.008

> = 66

322

170

56.67 (43.69,68.79)

0.61 (0.56,0.67)

0.49 (0.44,0.55)

 

BMI

< =25

223

115

53.48 (37.42,NA)

0.58 (0.51,0.65)

0.46 (0.4,0.54)

0.02

>25

376

162

75.33 (67.05,NA)

0.69 (0.65,0.74)

0.59 (0.54,0.65)

 

Gender

F

281

114

87.52 (72.34,NA)

0.71 (0.65,0.76)

0.62 (0.56,0.68)

0.0002

M

318

163

53.78 (41.85,68.66)

0.6 (0.55,0.66)

0.47 (0.42,0.54)

 

ASA

2

63

23

NA (63.24,NA)

0.7 (0.59,0.83)

0.62 (0.5,0.76)

0.04

3

500

230

69.97 (60.35,NA)

0.65 (0.61,0.69)

0.55 (0.5,0.59)

 

4

35

24

39.13 (20.4,NA)

0.56 (0.42,0.76)

0.38 (0.25,0.59)

 

Stage

1

332

121

87.19 (81.8,NA)

0.75 (0.71,0.8)

0.64 (0.59,0.7)

< 0.0001

2

125

74

48.65 (27.73,66.52)

0.55 (0.46,0.64)

0.43 (0.35,0.53)

 

3

140

82

31.44 (20.01,67.05)

0.49 (0.41,0.58)

0.4 (0.33,0.5)

 

Preoperative

N

497

222

74.24 (65.54,NA)

0.67 (0.63,0.72)

0.57 (0.52,0.61)

0.001

Hb < 12 g/dL

Y

101

55

39.13 (23.75,NA)

0.52 (0.43,0.63)

0.42 (0.33,0.54)

 

BT

N

548

244

74.24 (66.52,7.52)

0.67 (0.63,0.71)

0.57 (0.52,0.61)

0.0002

Y

51

33

23.98 (16.98,55.22)

0.4 (0.28,0.57)

0.29 (0.18,0.45)

 

Number of units

0

548

244

74.24 (66.52,87.52)

0.67 (0.63 0.71)

0.57 (0.52,0.61)

0.001

Transfused

1-3

31

19

24.34 (10.32,NA)

0.4 (0.25,0.63)

0.32 (0.19,0.55)

 

4-9

12

8

24.24 (22.21,NA)

0.42 (0.2,0.88)

0.21 (0.06,0.72)

 

>10

6

5

17.85 (3.45,NA)

0.33 (0.11,1)

0.17 (0.03,1)

 

Preoperative

N

501

217

77.63 (66.69,NA)

0.69 (0.65,0.73)

0.58 (0.53,0.62)

< 0.0001

Chemo-radiation

Y

98

60

21.71 (13.83,55.22)

0.45 (0.36,0.56)

0.38 (0.29,0.49)

 

Postoperative

Chemo only

132

57

81.8 (60.35,NA)

0.67 (0.59,0.76)

0.58 (0.5,0.68)

< 0.0001

Therapy

Chemo/Radiation

54

35

34.92 (17.35,74.24)

0.49 (0.36,0.65)

0.39 (0.28,0.56)

 

None

378

160

75.33 (66.52,NA)

0.69 (0.65,0.74)

0.58 (0.53,0.63)

 

Radiation only

35

25

20.66 (3.47,51.35)

0.38 (0.25,0.59)

0.27 (0.15,0.46)

 
  1. P-values from the log-rank test (univariable analysis), p < 0.05 is considered statistically significant. BMI Body mass index. ASA American Society of Anesthesiologist physical status. Hb Hemoglobin.