VLPP

Cough stress test

Test

Negative

Positive

X²

p

N = 29 (%)

N = 7 (%)

>100

60 - 75

80 - 100

10 (34.5)

2 (6.9)

17 (58.6)

1 (14.3)

6 (71.4)

1 (14.3)

15.046

0.001**