Table 3 Mean differences and SD of differences between IOS and TremoFlo across the different groups.

From: Comparison of Forced and Impulse Oscillometry Measurements: A Clinical Population and Printed Airway Model Study

 

Healthy Controls

Asymptomatic Smokers

Asthma

Mean Difference (IOS-TremoFlo)

Standard Deviation of the mean difference

p-value

95% CI

Mean Difference (IOS-TremoFlo)

Standard Deviation of the mean difference

p-value

95% CI

Mean Difference (IOS-TremoFlo)

Standard Deviation of the mean difference

p-value

95% CI

R5 (Kpa.s.L−1)

0.03

0.03

0.003

(0.012; 0.051)

0.06

0.05

0.001

(0.031; 0.078)

0.04

0.07

<0.0001

(0.029; 0.051)

R20(19) (Kpa.s.L−1)

0.02

0.03

0.008

(0.009; 0.040)

0.04

0.03

0.0003

(0.017; 0.052)

0.03

0.03

<0.0001

(0.019; 0.034)

R5-R20(19) (Kpa.s.L−1)

0.01

0.03

0.326

(−0.013; 0.024)

0.02

0.04

0.039

(0.001; 0.038)

0.01

0.06

0.023

(0.002; 0.020)

AX (Kpa.L−1)

−0.16

0.15

0.001

(−0.242; −0.074)

−0.33

0.45

<0.0001

(−0.381; −0.132)

−1.08

1.36

<0.0001

(−1.144; −0.498)

X5 (Kpa.s.L−1)

−0.01

0.02

0.296

(−0.015; 0.006)

0.00

0.03

0.956

(−0.014; 0.016)

0.02

0.07

0.033

(0.001; 0.024)

X20(19) (Kpa.s.L−1)

0.05

0.02

0.0001

(0.037; 0.056)

0.06

0.04

<0.0001

(0.036; 0.080)

0.06

0.03

<0.0001

(0.050; 0.063)

  1. Definition of abbreviations: R5: Resistance at 5 Hz; R20(19): Resistance at 20/19 Hz; R5-R20(19): Resistance at 5 minus 20(19) Hz; AX: Area of Reactance; X5: Reactance at 5 Hz; X20(19): Reactance at 20(19) Hz. p-values obtained from Wilcoxon signed rank test (paired test), 95% confidence intervals are for the median of the difference.
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