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Psychometric testing of four transtheoretical model questionnaires for the behavior, completing health care proxies
Author(s) -
Jezewski Mary Ann,
Finnell Deborah S.,
Wu YowWu Bill,
Meeker Mary Ann,
Sessanna Loralee,
Lee Jongwon
Publication year - 2009
Publication title -
research in nursing and health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 85
eISSN - 1098-240X
pISSN - 0160-6891
DOI - 10.1002/nur.20352
Subject(s) - transtheoretical model , operationalization , confirmatory factor analysis , psychology , internal consistency , reliability (semiconductor) , psychometrics , clinical psychology , construct validity , health care , proxy (statistics) , structural equation modeling , behavior change , social psychology , philosophy , statistics , power (physics) , mathematics , physics , epistemology , economics , economic growth , machine learning , computer science , quantum mechanics
Abstract The purpose of the study was to develop four questionnaires based on the transtheoretical model (TTM) to assess the behavior, completing a healthcare proxy (HCP). The aims were to (a) operationalize the four TTM constructs for completing a HCP and (b) evaluate the psychometric properties of the questionnaires. The questionnaires were constructed and content validity established using an expert panel. Internal consistency values for each questionnaire and subscales within each questionnaire were >.79. Confirmatory factor analysis provided evidence that decisional balance and the processes of change questionnaires each contained two factors. Our data support validity and reliability of the TTM questionnaires related to HCP completion. © 2009 Wiley Periodicals, Inc. Res Nurs Health 32:606–620, 2009