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Validity and reliability of the Korean version of the Wisconsin Smoking Withdrawal Scale

Korean Journal of Internal Medicine 2021년 36권 1호 p.135 ~ 144
Joo Hyon-Soo, 강현희, 문화식, 이상학,
소속 상세정보
 ( Joo Hyon-Soo ) - Catholic University College of Medicine Uijeongbu St. Mary’s Hospital Department of Internal Medicine
강현희 ( Kang Hyeon-Hui ) - Catholic University College of Medicine St. Paul’s Hospital Department of Internal Medicine
문화식 ( Moon Hwa-Sik ) - Catholic University College of Medicine St. Paul’s Hospital Department of Internal Medicine
이상학 ( Lee Sang-Haak ) - Catholic University College of Medicine St. Paul’s Hospital Department of Internal Medicine

Abstract


Background/Aims: This study evaluated the validity and reliability of the Korean version of the Wisconsin Smoking Withdrawal Scale (WSWS-K) for use in clinical practice and research on Korean smokers.

Methods: The Wisconsin Smoking Withdrawal Scale was translated into Korean and then back-translated into English. The authors reviewed the translation and back-translation and approved the final questionnaire draft. The validity and reliability of the WSWS-K were evaluated based on data collected from 300 participants. Construct validity was evaluated with a confirmatory factor analysis. Criterion-related validity was assessed by examining the relationships between the subscales of the WSWS-K and the matched items of the Korean version of the Minnesota Nicotine Withdrawal Scale (MNWS-K).

Results: The participants were predominantly male (93.6%) and the mean age was 59.23 ± 15.19 years. The confirmatory factor analysis revealed that fit indices (namely, the goodness-of-fit index, adjusted goodness-of-fit index, comparative fit index, and the normed fit index) exceeded or approached 0.9. Cronbach’s alpha for the entire scale was 0.87. The total score of the WSWS-K had a statistically significant positive correlation with that of the MNWS-K (Pearson’s correlation coefficient, 0.768; p < 0.01). Additionally, we performed linear regression between the WSWS-K and MNWS-K scores after adjusting for age, gender, comorbidity, and smoking history. After this adjustment, the p value of the WSWS- K was < 0.001.

Conclusions: The WSWS-K had satisfactory validity and reliability. The WSWS- K can be used with acceptable validity and reliability in research and clinical evaluation of Korean smokers.

키워드

Smoking cessation; Validity and reliability; Translations

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