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Table 4 Descriptive statistics for EtCO2 wave signal parameters by exposure within open and sealed HEF and paired t-test for EtCO2 signal parameters

From: A novel application of capnography during controlled human exposure to air pollution

EtCO2 Wave Signal Statistics EXP Paired t-test (exp1-exp2)
  1 2   
  N Mean Std CV N Mean Std CV t p|
MEAN 60 23.73 2.25 9.47 54 22.86 1.60 7.01 1.21 0.31
STDEV 60 13.85 1.14 8.21 54 13.81 0.69 5.01 0.16 0.88
MINIMUM 60 0.31 0.22 72.02 54 0.78 0.86 110.16 1.04 0.37
MEDIAN 60 30.60 3.81 12.47 54 29.55 3.59 12.15 0.59 0.60
RMS 60 27.49 1.75 6.37 54 26.67 1.45 5.43 1.21 0.31