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  • Title: The use of a videotaped questionnaire for studying asthma prevalence. A pilot study among New Zealand adolescents.
    Author: Shaw RA, Crane J, O'Donnell TV, Lewis ME, Stewart B, Beasley R.
    Journal: Med J Aust; 1992 Sep 07; 157(5):311-4. PubMed ID: 1435471.
    Abstract:
    OBJECTIVE: To examine the feasibility of measuring asthma prevalence by means of an audio-visual presentation of asthma symptoms and signs (video questionnaire) and to compare this technique with a standard written questionnaire for predicting bronchial hyperresponsiveness. DESIGN: A cross-sectional study comparing the ability of a video questionnaire and a written, interviewer administered questionnaire to predict bronchial hyperresponsiveness. Bronchial responsiveness was measured with hand held nebulisers. SETTING: Community survey of a New Zealand rural secondary school. SUBJECTS: A total of 456 adolescent school children aged 12-19 years (mean 15.5 years). OUTCOME MEASURES: Comparison of the sensitivity and specificity of a standard questionnaire versus a video questionnaire for bronchial hyperresponsiveness. RESULTS: The technique was easy to administer in the community setting. Overall sensitivity and specificity for the prediction of bronchial hyperresponsiveness were similar for the video and interviewer administered questionnaires. CONCLUSIONS: This new technique is easily used in the community setting, and gives predictions of bronchial hyperresponsiveness similar to those of a standard interviewer administered questionnaire. Further examination of the technique in comparisons of asthma prevalence among different populations is planned.
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