Skip to main content

Table 1 Distribution of patients with cystic fibrosis and healthy subjects according to clinical laboratory markers

From: Ventilatory abnormalities in patients with cystic fibrosis undergoing the submaximal treadmill exercise test

Marker

Patients with cystic fibrosis

Healthy subjects

p-value

Sex (male)

32 (51.61)

30 (48.39)

0.860

Sex (female)

32 (48.50)

34 (51.50)

 

Age (years)

12.34 (11.48–13.21) ± 3.47

13.51 (12.34–14.68) ± 4.64

0.490

12.00 (6.00–23.00)

11.00 (9.00–25.00)

Weight (kg)

34.80 (31.47–38.12) ± 13.30

46.39 (42.75–50.02) ± 14.44

≤0.001

33.75 (12.70–74.20)

44 (25.80–87.90)

Height (m)

1.42 (1.37–1.46) ± 0.19

1.52 (1.49–1.56) ± 0.132

0.003

1.45 (1.00–1.74)

1.58 (1.20–1.87)

BMI

16.72 (15.93–17.50) ± 3.15

19.56 (18.72–20.40) ± 3.33

≤0.001

15.87 (11.30–28.63)

19.01 (13.46–27.13)

Shwachman–Kulczycki score

77.93 (76.20–79.67) ± 6.94

80.00 (60.00–90.00)

FVC%

78.61 (73.44–83.78) ± 20.68

95.78 (92.89–98.67) ± 11.56

≤0.001

80.50 (32.00–121.00)

93.00 (69.00–130.00)

FEV1%

68.98 (63.38–74.59) ± 22.45

91.94 (87.70–96.17) ± 16.96

≤0.001

65.50 (19.00–117.00)

90.00 (41.00–125.00)

FEV1/FVC

85.66 (82.77–88.54) ± 11.56 87.50 (52.00–107.00)

98.23 (95.99–100.47) ± 8.95 100.00 (74.00–125.00)

≤0.001

Borg rating (initial)

  

<0.001

0

48 (75.0%)

64 (100.0%)

1

12 (19.0%)

0 (0.0%)

2

3 (5.0%)

0 (0.0%)

3

1 (1.0%)

0 (0.0%)

Borg rating (end)

   

0

33 (52.0%)

56 (88.0%)

 

1

6 (9.0%)

1 (1.0%)

 

2

14 (22.0%)

4 (6.3%)

 

3

6 (9.0%)

0 (0.0%)

 

4

2 (3.0%)

0 (0.0%)

≤0.005

5

1 (1.0%)

0 (0.0%)

 

6

1 (1.0%)

2 (3.0%)

 

7

0 (0.0%)

1 (1.0%)

 

10

1 (1.0%)

0 (0.0%)

 
  1. FVC, forced vital capacity; FEV1, forced expiratory volume in the first second of the FVC; BMI, body mass index. For sex and the Borg scale rating, the data are presented as n (%). For variables with numeric distribution, the data are presented as mean (confidence interval) ± standard deviation and median (minimum–maximum). Differences between patients with CF and healthy subjects were calculated by the χ2 test for categorical variables and by the Mann–Whitney test for numerical data not normally distributed (α = 0.05).