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Table 1 Comparison of resistance values at various frequencies measured in the R model

From: Comparison of two devices for respiratory impedance measurement using a forced oscillation technique: basic study using phantom models

Standard resistor (kPa s/l)

5 Hz

20 Hz

35 Hz

0.196

 IOS

0.174 (0.001)

0.178 (0.000)

0.187 (0.001)

 MG-noise

0.191 (0.001)

0.191 (0.001)

0.194 (0.001)

 MG-pulse

0.188 (0.001)

0.193 (0.001)

0.195 (0.003)

0.402

 IOS

0.371 (0.001)

0.380 (0.000)

0.409 (0.001)

 MG-noise

0.437 (0.001)

0.422 (0.001)

0.413 (0.001)

 MG-pulse

0.428 (0.003)

0.431 (0.001)

0.429 (0.001)

0.951

 IOS

0.848 (0.001)

0.878 (0.000)

0.965 (0.001)

 MG-noise

1.020 (0.001)

0.932 (0.001)

0.843 (0.001)

 MG-pulse

0.985 (0.001)

0.951 (0.001)

0.899 (0.003)

  1. The data are shown as the mean (SD) of three measurements
  2. IOS MasterScreen IOS-J®, MG MostGraph-01®