Effect of case identification changes on pre-hospital intubation performance indicators in an Australian helicopter emergency medical service.

A negative binomial regression model to estimate the effect on the Contact to Intubation interval from distance to the scene, physiological characteristics, while controlling for the dispatch system type, entrapment/difficult access, indication for intubation, first pass success, grade of first intubator demonstrated a marginally significant relationship between dispatch period and Contact to Intubation interval ( χ 2 (16) = 88.89, P < 0.001; b = −0.159; P = 0.049) (Table S2 ).

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