Development of Smoking Cessation Health-Related Quality of Life Scale

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DOI: https://doi.org/10.14456/sustj.2009.6
Keywords:
health-related quality of life validity reliability scale smoking cessation tobacco dependence

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Supakit Wongwiwatthananukit,
Department of Pharmacy Practice, College of Pharmacy, University of Hawaii, USA. Corresponding author's e-mail: [email protected]
Sanchai Wongwiwatthananukit
Department of Social Medicine, Lamphun Hospital, Thailand
Rawadee Dhummauppakorn
Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Thailand
Thitiporn Naktuan4
Department of Pharmacy, Phraphuthabat Hospital, Thailand

Abstract

The purpose of this methodological research was to develop a smoking cessation health-related quality oflife scale and examine the validity and reliability of this measure. The research involved 3 steps: (1) scaledevelopment, (2) expert review of the scale, and (3) testing of the scale. A total of 431 current adult smokersand ex-smokers who visited the smoking cessation clinics in hospitals/ institutes and community pharmaciesparticipated in the study. The initial scale was developed and based on a literature review and semi-structuredinterviews with smokers, ex-smokers, and healthcare professionals. A five-point Likert scale was used as anitem response choice. For psychometric properties, exploratory factor analysis with item analysis was used toexamine the construct validity and reliability of the scale. Known group validity was used to support the evidenceof construct validity. Results indicated that the scale had content validity, construct validity, and high internalconsistency reliability. The scale consisted of 36 items with an overall coefficient alpha 0.93. A four-factorstructure was identified and interpreted as representing four subscales: (1) general well being (18 items), (2)satisfaction (8 items), (3) craving and self-control (4 items), and (4) psychological and emotional problems (6items). The Mann-Whitney-U test revealed ex-smokers who had quit smoking for ³ 3 months reportedsignificantly higher quality of life scores than smokers on the four subscales (P < 0.02), demonstrating theconstruct validity of the scale. The findings provide preliminary evidence of scale validity and reliability.

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How to Cite
Wongwiwatthananukit, S., Wongwiwatthananukit, S., Dhummauppakorn, R., & Naktuan4, T. (2013). Development of Smoking Cessation Health-Related Quality of Life Scale. Science, Engineering and Health Studies, 3(2), 18–32. https://doi.org/10.14456/sustj.2009.6
Issue
Volume 3, Number 2 (July - December), 2009
Section
Research Articles

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