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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)