title: [Several methodologic aspects of chronic bronchitis surveys].
abstract: The frequency of chronic bronchitis and the late and irreversible character of the respiratory invalidity thus caused, led to recognition at an early stage when the disease is usually neglected by the patient. In the choice of examinations designed to select pathological cases, it is important to take into consideration a few elementary notions of methodology. 1 - Precise definition of objectives. 2 - Drawing up a questionnaire and evaluation of its performance. 3 - The place, execution and interpretation of morphological and functional investigations, are the main points developed from personal investigations and similar investigations carried out in other countries. Quality controls of these main methods of analysis of the disease under study are necessary for reliable numerical evaluation. The principles drawn up should be borne in mind at a time when epidemiology is occupying a basic position in bioclinical research and numerous attempts have been made to carry out investigations from which one should obtain the maximum information.
mesh_terms: D001991:Bronchitis / Q000175:diagnosis / Q000453:epidemiology* / Q000503:physiopathology; D002908:Chronic Disease; D006801:Humans; D008403:Mass Screening; D012129:Respiratory Function Tests; D011795:Surveys and Questionnaires
vernacular_title: Quelques aspects méthodologiques des enquêtes sur les bronchites chroniques