Reliability of the Thai Version of the Fagerstrom Test for Nicotine Dependence (FTND)

Thaniya Klinsophon BSc*, Prawit Janwantanakul PhD*, Premtip Thaveeratitham PhD*

Affiliation : * Department of Physical Therapy, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand

Objective : To evaluate the test-retest reliability and internal consistency of the Thai version of Fagerstrom Test for Nicotine Dependence (FTND). Material and Method: The FTND was translated into Thai. Afterward, participants completed the questionnaire two times, at baseline and seven days after. The intraclass correlation coefficient (ICC) and Cronbach’s alpha were calculated for the test-retest reliability and internal consistency, respectively.
Results : The average age of the 130 participants was 32.4 years, and 45.4% finished secondary education. Participants smoked an average of 11.0 cigarettes per day over an average period of 11.3 years. The ICC of FTND was 0.83. Cronbach’s alpha was 0.52.
Conclusion : Overall, the ICC and Cronbach’s alpha of the Thai version was close to the original version in English. Therefore, the Thai FTND could be used in the clinic and in research.

Keywords : The Fagerström Test for Nicotine Dependence, FTND, Nicotine dependence level, Reliability

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