Respiratory sections of questionnaires are imprecise

BMJ 1996; 313 doi: https://doi.org/10.1136/bmj.313.7060.814b (Published 28 September 1996) Cite this as: BMJ 1996;313:814
  1. Rollo Clifford, Consultant
  1. Department of Paediatrics, West Dorset Hospital, Dorchester DT1 2JY

    EDITOR,—The national child development study is a source of abundant but often inaccurate data that is all too tempting for paper generators. Unfortunately, the respiratory sections of the questionnaires used in the study are so imprecise as to be almost worthless. Diagnoses rather than symptoms predominate and are thus open to error. Questions have differed considerably with each …

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