Greenspon, L W A discriminant analysis applied to methacholine bronchoprovocation testing improves classification of patients as normal, asthma, or COPD. [electronic resource] - Chest Nov 1992 - 1419-25 p. digital Publication Type: Journal Article ISSN: 0012-3692 Standard No.: 10.1378/chest.102.5.1419 doi Subjects--Topical Terms: AdultAsthma--classificationBronchial Provocation TestsDiscriminant AnalysisForced Expiratory Flow RatesForced Expiratory VolumeHumansLung Diseases, Obstructive--classificationMethacholine ChlorideMiddle AgedPredictive Value of TestsSensitivity and SpecificityVital Capacity