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Table 2 Concordance rate, angular bias, and radial limits of agreement in different data subsets

From: Reliability of the nitrogen washin-washout technique to assess end-expiratory lung volume at variable PEEP and tidal volumes

  No exclusion zone Exclusion threshold 100 mL Exclusion threshold 150 mL Exclusion threshold 200 mL Exclusion threshold 300 mL
Concordance rate 79% 82% 82% 86% 86%
Angular bias ± SD (°) -4 ± 37 3 ± 25 6 ± 25 1 ± 26 -1 ± 25
Radial limits of agreement (°) ±78 ±51 ±48 ±48 ±50
  1. Exclusion threshold refers to exclusion of data points with change in end-expiratory lung volume between consecutive time points below or equal to 100, 150, 200, and 300 mL, respectively. SD, standard deviation.