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Table 1 Key spirometric parameters across the four patient classes, with both spirometers: (1) conventional spirometer and (2) Air Next spirometer

From: Validation of the portable Bluetooth® Air Next spirometer in patients with different respiratory diseases

Spirometric parameters

 

Conventional spirometer

Air Next spirometer

Diagnosis

FEV1(L)

FVC (L)

FEV1(L)

FVC (L)

Asthma

Mean

2,15

2,95

2,08

2,85

Minimum

0,78

1,10

0,82

1,04

Maximum

4,72

7,06

4,15

5,71

Std. Deviation

0,82

1,15

0,81

1,06

COPD

Mean

1,96

3,08

1,85

2,91

Minimum

0,96

1,59

0,90

1,53

Maximum

3,95

5,53

3,87

4,84

Std. Deviation

0,63

0,83

0,60

0,72

Normal

Mean

3,07

3,83

3,06

3,73

Minimum

1,81

2,38

1,73

2,16

Maximum

4,83

6,18

4,84

6,16

Std. Deviation

0,69

0,96

0,75

0,99

Restrictive

Mean

2,25

2,90

2,16

2,80

Minimum

1,05

1,59

1,00

1,55

Maximum

3,99

5,02

3,90

4,89

Std. Deviation

0,63

0,85

0,61

0,77

Total

Mean

2,36

3,19

2,29

3,07

Minimum

0,78

1,10

0,82

1,04

Maximum

4,83

7,06

4,84

6,16

Std. Deviation

0,81

1,02

0,83

0,97