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document
Validity and reliability assessment of the Siriraj Asthma Control Questionnaire . OBJECTIVE The present study assessed the validity and reliability of the Siriraj Asthma Control Questionnaire in Asthma Clinic , Siriraj Hospital . MATERIAL AND METHOD The data of the questionnaire responses and spirometric results from 20 randomized asthmatic patients in the clinic including the record of 3 visits for each subject . The validation was performed by Kruskal-Wallis test comparing the scores with the level of asthma control determined by physicians according to GINA guideline . Internal consistency reliability was analyzed by Cronbach 's alpha . RESULTS Sixty questionnaires from 20 patients with age 29-73 years were analyzed . There were 40 controlled , 7 partly controlled and 13 uncontrolled visits . The scores from 5-items questionnaires and 6-items clinical score were significantly associated with the physician-diagnosed groups ( i.e. , controlled , partly controlled and uncontrolled groups ) . Median scores ( min , max ) were 0 ( 0 , 5 ) , 2 ( 0 , 6 ) , 4 ( 0 , 12 ) respectively , ( 5-items , p < 0.001 ) and 2 ( 0 , 7 ) , 3 ( 1 , 7 ) , 6 ( 2,15 ) respectively , ( 6-items , p < 0.001 ) . Internal consistency reliability of both 5-items questionnaire and 6-items clinical score were within the acceptable range ( 0.829 and 0.708 respectively ) . 5-items questionnaire is more associated with the physician diagnosed group and more consistent than 6-items clinical score . Further analysis revealed cutoff point at 2.5 to separate uncontrolled from controlled or partly controlled patient with sensitivity 76.9 % and specificity 89.4 % and cutoff point at 1.5 to separate uncontrolled or partly controlled from controlled patient with sensitivity 70.0 % and specificity 85.0 % . CONCLUSION The validity and reliability of Siriraj Asthma Control Questionnaire is acceptable and might be used in the clinical practice and research in Thai asthmatic patients .
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Intervention_Other
Siriraj Asthma Control Questionnaire
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Intervention_Other
Siriraj Asthma Control Questionnaire
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Intervention_Other
Kruskal-Wallis test
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Intervention_Other
Siriraj Asthma Control Questionnaire
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Outcome_Other
Validity and reliability
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Outcome_Other
validity
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Outcome_Other
reliability
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Outcome_Physical
scores from 5-items questionnaires and 6-items clinical score
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Outcome_Physical
Median scores ( min , max )
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Outcome_Other
Internal consistency reliability
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Outcome_Other
5-items questionnaire
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Outcome_Other
consistent
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Outcome_Physical
6-items clinical score .
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Outcome_Other
sensitivity
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Outcome_Other
specificity
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Outcome_Other
cutoff point
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Outcome_Other
sensitivity
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Outcome_Other
specificity
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Outcome_Other
validity and reliability
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Participant_Condition
Asthma
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Participant_Sample-size
20
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Participant_Condition
asthmatic
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Participant_Sample-size
20
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Participant_Age
age 29-73 years
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Participant_Condition
asthmatic