Mean difference in PD20, PD15, and PD10 (with 95% CI) , and 95% repeatability in doubling doses AMP
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PD20, PD15, PD10 = dose of AMP provoking a fall in forced expiratory volume in one second (FEV1) of 20%, 15%, and 10%, respectively.; AMP = adenosine-5′-monophosphate.









