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Table 6 Consistency of measurements for each subject measured with three different APDs.

From: Testing limits to airflow perturbation device (APD) measurements

Subject   1 2 3 4 5 6 7 8 9 10
Control 1
(APD 1)
Avg 2.86 5.20 3.96 5.12 4.30 3.53 4.50 4.52 2.91 4.97
  Std Dev 0.29 0.81 0.31 0.66 0.41 0.42 0.28 0.24 0.28 0.46
  No. 20 20 18 20 20 20 16 10 14 18
Control 2
(APD 2)
Avg 2.86 5.50 4.09 4.56 4.09 4.14 4.50 4.28 2.66 5.13
  Std Dev. 0.26 0.77 0.29 0.37 0.21 0.54 0.43 0.19 0.21 0.40
  No. 10 10 9 10 10 10 8 5 7 9
Control 3
(APD 3)
Avg 2.75 5.63 3.82 5.02 4.08 3.70 4.36 4.29 2.72 4.73
  Std. Dev 0.19 0.64 0.22 0.40 0.39 0.41 0.23 0.39 0.30 0.25
  No. 10 10 9 10 10 10 8 5 7 9
  1. Resistances are given in cmH2O·sec/L.