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Table 3 Number of normal and abnormal test results divided according to the current diagnostic status among 58 double lung transplant recipients.

From: Prediction of BOS by the single-breath nitrogen test in double lung transplant recipients

 

Dimension

Cut off value

NoBOS

BOS

BOS 0-p

   

Normal

Abnormal

Normal

Abnormal

Normal

Abnormal

FEV1

% basal

< 90

264

28

0

37

0

7

FVC

% basal

< 90

276

11

8

27

5

1

N2 slope

% basal

> 299

240

12

12

13

4

3

FEV1

% pred.

< 49

279

14

12

24

7

0

FVC

% pred.

< 52

275

13

24

10

6

0

N2 slope

% pred.

> 478

234

18

1

24

0

7

  1. Cut off values are based on the 43 patients who did not develop BOS or BOS 0-p and are chosen to give 95% specificity except for FEV < 90% of the basal value.