Validity and Reliability of Indonesian Languages Version of Zung Anxiety Self-Assessment Scale Questionnaire for Pulmonary Tuberculosis Patients
Keywords:Validity, Reliability, Anxiety, Pulmonary Tuberculosis.
Background: Patients with chronic disease, including tuberculosis, often get anxiety in their daily life.
Valid and reliable instrument needed to detect anxiety in Tuberculosis patients in Indonesia. Therefore, Zung
Anxiety Self-Assessment Scale questionnaire in the Indonesian language version should be validated and
proved as a reliable instrument.
Objective: The purpose of this research is to validate and to get the scientific evidence of reliability on
Indonesian language version of Zung Anxiety Self-Assessment Scale questionnaire.
Methods: The design of this study is cross sectional. Zung Anxiety Self-Assessment Scale questionnaires
that have been translated to Indonesian language are given and filled by 129 pulmonary tuberculosis patients.
We used Corrected Item-Total Correlation table for validity test and Cronbach’s Alpha value for reliability
Results: Almost all of the questions (19 questions) are valid because Corrected Item-Total Correlation
values for all the questions are more than r table (>0,174). One question, question number 17, is not valid and
was deleted because had negative r value. The questionnaire is also reliable with r Alpha value (Cronbach’s
Conclusion: Indonesian language version of Zung Anxiety Self-Assessment Scale questionnaires is a valid
and reliable instrument to be used for detecting anxiety in adult pulmonary tuberculosis patients.