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  • Title: The wheezing schoolchild--an undiagnosed asthmatic. A follow-up of children with parentally reported episodes of wheeze without diagnosed asthma.
    Author: Hetlevik O, Pløen O, Nystad W, Magnus P.
    Journal: Scand J Prim Health Care; 2000 Jun; 18(2):122-6. PubMed ID: 10944069.
    Abstract:
    OBJECTIVE: To examine children aged 7-15 years with parentally reported episodes of wheeze in order to estimate the proportion of undiagnosed asthmatics in this group. DESIGN: A cross-sectional study with clinical examination of subgroups. SETTING: All children (n = 832) aged 7-15 years in the municipality of Odda. SUBJECT: Based on completed questionnaires, the children were selected to one of four groups: Children with wheeze but no asthma (wheeze group); children with current asthma (asthma group); children with past asthma (past asthma group); and children with neither asthma nor wheeze (control group). MAIN OUTCOME MEASURES: Parental reports of episodes of wheeze, assessment of skin prick test sensitivity, measures of lung function and exercise-induced bronchoconstriction (EIB). RESULTS: In the wheeze group, 3 (7.5%) of 40 children were diagnosed with asthma in the 18-month period between the questionnaire survey and the examination, while 4 (10%) other children had EIB. Another 8 children (20%) reported 3 episodes of wheeze or more, and at least 1 episode during the 12-month period before the clinical examination. Classifying these children as asthmatics would give a proportion of 37.5% with undiagnosed asthma in the wheeze group, and the prevalence of current asthma among children aged 7-15 would rise from 2.9% based on a questionnaire survey to 4.9%. CONCLOSIONS: Using a wide definition of asthma, this study suggests that a large proportion of Norwegian children with wheeze actually have asthma.
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