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Table 2 Mean differences (with confidence intervals): Masterscreen vs EasyOne1 and EasyOne1 vs EasyOne2, overall and by age and sex

From: Considerations in the use of different spirometers in epidemiological studies

 

FEV1 (L)

FVC (L)

 

N

Mean diff.

95% CI

Mean diff.

95% CI

Masterscreen –EasyOne1

 Overall

49

0.24

(0.19;0.26)

0.37

(0.33; 0.41)

  ≤ 30 years

32

0.23

(0.18; 0.27)

0.37

(0.31; 0.42)

  > 30 years

17

0.23

(0.17; 0.29)

0.38

(0.33; 0.44)

 Males

15

0.26

(0.18; 0.35)

0.42

(0.31; 0.53)

 Females

34

0.21

(0.18; 0.24)

0.35

(0.31; 0.39)

EasyOne1 –EasyOne2

 Overall

49

0.03

(0.01;0.06)

0.04

(0.01; 0.06)

  ≤ 30 years

23

0.03

(−0.00; 0.08)

0.04

(0.00; 0.08)

  > 30 years

26

0.03

(0.00; 0.06)

0.03

(−0.00; 0.07)

 Males

17

0.06

(0.00; 0.11)

0.06

(0.01; 0.12)

 Females

32

0.02

(0.00; 0.05)

0.02

(− 0.00;0.05)