TitleDevelopment of a measure of asthma-specific quality of life among adults.
Publication TypeJournal Article
Year of Publication2014
AuthorsEberhart, NK, Sherbourne, CD, Edelen, MOrlando, Stucky, BD, Sin, NL, Lara, M
JournalQual Life Res
Date Published2014 Apr
KeywordsAdolescent, Adult, Aged, Asthma, Boston, California, Female, Focus Groups, Humans, Interview, Psychological, Male, Middle Aged, Patient Outcome Assessment, Psychometrics, Quality of Life, Sickness Impact Profile, Social Class, Surveys and Questionnaires, Young Adult

<p><b>PURPOSE: </b>A key goal in asthma treatment is improvement in quality of life (QoL), but existing measures often confound QoL with symptoms and functional impairment. The current study addresses these limitations and the need for valid patient-reported outcome measures by using state-of-the-art methods to develop an item bank assessing QoL in adults with asthma. This article describes the process for developing an initial item pool for field testing.</p><p><b>METHODS: </b>Five focus group interviews were conducted with a total of 50 asthmatic adults. We used "pile sorting/binning" and "winnowing" methods to identify key QoL dimensions and develop a pool of items based on statements made in the focus group interviews. We then conducted a literature review and consulted with an expert panel to ensure that no key concepts were omitted. Finally, we conducted individual cognitive interviews to ensure that items were well understood and inform final item refinement.</p><p><b>RESULTS: </b>Six hundred and sixty-one QoL statements were identified from focus group interview transcripts and subsequently used to generate a pool of 112 items in 16 different content areas.</p><p><b>CONCLUSIONS: </b>Items covering a broad range of content were developed that can serve as a valid gauge of individuals' perceptions of the effects of asthma and its treatment on their lives. These items do not directly measure symptoms or functional impairment, yet they include a broader range of content than most existent measures of asthma-specific QoL.</p>

Alternate JournalQual Life Res
PubMed ID24062237
PubMed Central IDPMC4085111
Grant ListR01 HL107312 / HL / NHLBI NIH HHS / United States
T32 AG000212 / AG / NIA NIH HHS / United States
R01-CA060068 / CA / NCI NIH HHS / United States
R01-CA115361 / CA / NCI NIH HHS / United States