A parent completed questionnaire to describe the patterns of wheezing
and other respiratory symptoms in infants and preschool children
C V E Powell, P McNamara, A Solis, and N J Shaw
 

Full tabular summaries of the questionnaire results

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Table 1 Short-term reliability results for the 20 daytime symptom questions.  Except for ‘ever wheezed’, questions refer to the last 3 months
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Table 2 Short-term reliability results for the 5 ‘night –time’ symptom, 4 ‘impact on child’ and 4 ‘impact on family’ questions.
Questions refer to the last 3 months
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Table 3 Results of principle component analysis with varimax rotation on data from 28 questions (questions 17,18,19 & 24 excluded).  Internal consistency of four domains presented as Cronbach alpha scores
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Table 4  Main contributing items to the four identified components with corresponding correlation from factor analysis of 28 questions
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Table 5  Sensitivity and specificity of scores for each of the original four domains.  Figures in bold are the best cut off score to discriminate between doctor diagnosed asthma (n=20) and the neonatally recruited unlabelled infants (n=72)
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Table 6 Sensitivity and specificity of scores for each of the four newly created symptom domains. Figures in bold are the best cut off score to discriminate between doctor diagnosed asthma (n=20) and the neonatally recruited unlabelled infants (n=72)
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