Document Type: Research Articles
Faculty of Sport Science and Recreation, Universiti Teknologi MARA Cawangan Pahang, Bandar Pusat Jengka, Malaysia.
Faculty of Medicine, Universiti Teknologi Mara Sg. Buloh, Selangor, Malaysia.
Faculty of Sport Science and Recreation, Universiti Teknologi MARA Kota Samarahan, Sarawak, Malaysia.
Objective: The aim of this study was to evaluate the psychometric properties of the Malay translated version of
the Theory of Planned Behavior (TPB) intention to quit smoking questionnaire. Methods: A cross-sectional study
was performed involving 185 male smokers. The forward-backward translation procedure was adopted to translate the
questionnaire from English to Malay. The internal consistency and stability were assessed using Cronbach’s alpha and a
correlation analysis and Exploratory Factor Analysis was conducted. Result: The translated questionnaire showed good
internal consistency with Cronbach’s alpha values of 0.86, 0.64, 0.74 and 0.90 for each of the four respective factors.
The test-retest reliability revealed acceptable stability, with Spearman’s correlation coefficients ranging from low to
moderate (r>0.30-0.50) and a satisfactory inter class correlation coefficient (ICCs). The construct validity achieved an
acceptable factor loading for each construct which ranged from 0.40 to 0.90. Conclusion: The current study provided
psychometric evidence for an appropriate, reliable and valid tool of TPB Malay version. This questionnaire could be
applied in evaluating smoking cessation interventions in Malaysia.