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Emerg Med J 20:326-328 doi:10.1136/emj.20.4.326
  • Original Article

The PEP respiratory monitor: a validation study

Table 2

Limits of agreement for each method against capnography

Mean difference Standard deviation Limits of agreement (breaths per minute)
Transthoracic impedance −0.81 2.56 −5.93 to 4.31
Observer counting 0.24 1.86 −3.49 to 3.96
PEP 0.04 1.39 −2.73 to 2.81

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