Abstract
Objective:The main purpose of this study was to identify the psychometric properties and validate the Bahasa Malaysia version of the Brief Illness Perception Questionnaire among patients with cancer. Methods:A total of 129 newly diagnosed patients with cancer were consecutively sampled. Reliability and validity of the questionnaire were tested using translation validity, test-retest reliability, Principal Component Analysis, Cronbach’s alpha coefficient for domains and item-total correlation. Results:The questionnaire indicates excellent test-retest reliability. The Principal Component Analysis (PCA) revealed that Kaiser-Meyer-Olkin (KMO) is 0.60 for the two-factor structure of the Brief Illness Perception Questionnaire of the Bahasa Malaysia version which consists of cognitive illness representation and emotional illness representation. Conclusion:The Brief Illness Perception Questionnaire in the Bahasa Malaysia version is a useful tool to use among patients with cancer in Malaysia context despite moderate psychometric properties. This is based on the premise that the questionnaire can be used as a quick tool to assess illness perceptions among Malaysian with cancer in routine oncology practice.
Highlights
Cancer is a major lifelong disease and a leading cause of morbidity and mortality worldwide (Chou, 2019)
The Principal Component Analysis (PCA) revealed that Kaiser-Meyer-Olkin (KMO) is 0.60 for the two-factor structure of the Brief Illness Perception Questionnaire of the Bahasa Malaysia version which consists of cognitive illness representation and emotional illness representation
This is the first study validating the Brief Illness Perception Questionnaire (BIPQ) among patients living with cancer in a South East Asian setting
Summary
Cancer is a major lifelong disease and a leading cause of morbidity and mortality worldwide (Chou, 2019). The concept of illness perception originates from the Common Sense Self- Regulation Model of illness representation (Leventhal, 1980) Based on this model, the health outcomes of patients with chronic conditions are influenced by their cognitive and emotional illness representation wherein patients incorporate lay information, personal experience, and information from the social environment to form an interpretation of the impact of the disease on their lives (Hagger et al, 2017). We determined the reliability and validity of the Bahasa Malaysia version of the Brief Illness Perception Questionnaire in patients with cancer This is based on the premise that the questionnaire can be used as a quick tool to assess illness perceptions among Malaysian with cancer in routine oncology practice
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