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Internal consistency reliability, construct validity, and item response characteristics of the Kessler 6 scale among hospital nurses in Vietnam.

ABSTRACT: The present study investigated the internal consistency reliability, construct validity, and item response characteristics of a newly developed Vietnamese version of the Kessler 6 (K6) scale among hospital nurses in Hanoi, Vietnam. The K6 was translated into the Vietnamese language following a standard procedure. A survey was conducted of nurses in a large general hospital in Hanoi, Vietnam, using a questionnaire including the Vietnamese K6, other scales (DASS21, health-related QOL, self-rated health, and psychosocial work environment), and questions about demographic variables. Internal consistency reliability (Cronbach's alpha coefficient) was calculated. A confirmatory factor analysis was conducted. Eleven hypotheses were tested (as Pearson's correlations with the K6) to assess the scale's construct validity. Item response theory (IRT) analysis was conducted to identify the item response characteristics. The Cronbach's alpha coefficient was 0.864. The explanatory and confirmatory factor analyses indicated a one-factor structure. Most hypotheses tested for construct validity were supported. IRT analysis indicated that response categories were located in order according to severity. K6 provided reliable information regarding higher levels of psychological distress. The findings suggest that the Vietnamese version of the K6 is a reliable and valid instrument to measure psychological distress among hospital nurses in Vietnam.

SUBMITTER: Kawakami N

PROVIDER: S-EPMC7241835 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Internal consistency reliability, construct validity, and item response characteristics of the Kessler 6 scale among hospital nurses in Vietnam.

Kawakami Norito N Thi Thu Tran Thuy T Watanabe Kazuhiro K Imamura Kotaro K Thanh Nguyen Huong H Sasaki Natsu N Kuribayashi Kazuto K Sakuraya Asuka A Thuy Nguyen Quynh Q Thi Nguyen Nga N Minh Bui Thu T Thi Huong Nguyen Giang G Minas Harry H Tsutsumi Akizumi A

PloS one 20200521 5

The present study investigated the internal consistency reliability, construct validity, and item response characteristics of a newly developed Vietnamese version of the Kessler 6 (K6) scale among hospital nurses in Hanoi, Vietnam. The K6 was translated into the Vietnamese language following a standard procedure. A survey was conducted of nurses in a large general hospital in Hanoi, Vietnam, using a questionnaire including the Vietnamese K6, other scales (DASS21, health-related QOL, self-rated h ...[more]

PMID: 32437454

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Project description:Background and aimExperience of stigma towards methadone maintenance treatment (MMT) may be a barrier to the use of this treatment by people with opioid use disorder. We evaluated the factor structure, internal reliability, construct and criterion validity of a theory-based stigma measure, the Methadone Maintenance Treatment Stigma Mechanisms Scale (MMT-SMS) and compared this with the Substance Use Stigma Mechanism Scale (SU-SMS).DesignSurveys at the beginning and end of a prospective study together with records of drug use and treatment attendance during that study.SettingCommunity methadone clinic in the Northeastern USA.ParticipantsNinety-three participants who were receiving MMT; the average daily methadone dose was 84.8 mg/day (standard deviation = 28.39 mg/day).MeasurementsThe MMT-SMS uses a self-report questionnaire to assess three dimensions reflecting experiences of anticipated (nine items), enacted (nine items) and internalized stigma (seven items) specifically related to receiving MMT. Anticipated and enacted scales include three stigma source subscales (family, employers, health care workers; three items each). Responses are recorded on a five-point Likert-type scale, then averaged to produce the MMT-SMS scale/subscale scores. The SU-SMS is a self-report questionnaire to assess experiences of anticipated, enacted and internalized stigma regarding substance use history. Both scales were administered at the final parent study visit. Other measures included were assessed in the parent study and used to assess life-time and recent MMT (e.g. current MMT dose) and drug use experiences (e.g. past 30-day heroin injection).FindingsThe MMT-SMS demonstrated good internal reliability (α = 0.806-0.952 for components). Confirmatory factor analysis supported the seven-factor scale structure, distinguishing between experiences of anticipated, enacted and internalized stigma, and anticipated and enacted stigma source subscales (family, employers, health care workers) [root mean square error of approximation (RMSEA) = 0.076, 90% confidence interval (CI) = 0.061-0.090, P-close = 0.003; confirmatory fit index (CFI) = 0.974; Tucker-Lewis index (TLI) = 0.971]. Construct validity helped to distinguish the MMT-SMS from established substance use stigma constructs. Criterion validity observed associations with substance use experiences while on MMT, likely to predict future MMT success. Internalized MMT stigma was uniquely associated with daily MMT dose. Regarding criterion validity: anticipated MMT and enacted substance use stigma were associated with past 30-day heroin injection, MMT stigma uniquely associated with opioid use behaviors while receiving MMT, and substance use stigma broadly associated with injection-related behaviors.ConclusionsThe Methadone Maintenance Treatment Stigma Mechanisms Scale appears to be a reliable measure of methadone maintenance treatment stigma with robust validity in a sample of people with opioid use disorders receiving methadone maintenance treatment.

Dataset Information

Internal consistency reliability, construct validity, and item response characteristics of the Kessler 6 scale among hospital nurses in Vietnam.

Publications

Internal consistency reliability, construct validity, and item response characteristics of the Kessler 6 scale among hospital nurses in Vietnam.

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