Philip Gerretsen1,2,3,4,5, Julia Kim1,2, Parita Shah1,2, Lena Quilty2,5, Thushanthi Balakumar1, Fernando Caravaggio1,3, Eric Plitman1,2, Jun Ku Chung1,2, Yusuke Iwata1,3, Bruce G Pollock1,2,3,4,5, Satya Dash6, Sanjeev Sockalingam2,6, Ariel Graff-Guerrero1,2,3,4,5. 1. Multimodal Imaging Group, Research Imaging Centre, Centre for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada. 2. Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada. 3. Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada. 4. Geriatric Mental Health Division, Centre for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada. 5. Campbell Family Mental Research Institute, Centre for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada. 6. Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.
Abstract
AIMS: Impaired illness awareness or not accepting that one has obesity is an understudied phenomenon that may negatively influence treatment adherence and clinical outcomes. The purpose of this study was to perform a systematic review of available measures of obesity awareness, and subsequently develop and validate a novel scale that measures the core domains of obesity awareness. METHODS: A systematic review of the literature revealed no illness specific measure of subjective obesity awareness. As such, we designed the Obesity Awareness and Insight Scale (OASIS) to assess the following core domains of illness awareness: General Illness Awareness,, Symptom Attribution,, Awareness of Need for Treatment and the Negative Consequences attributable to the illness (www.illnessawarenessscales.com). Participants (n=100) were recruited from an online survey platform to assess the psychometric properties of OASIS. RESULTS: The OASIS demonstrated strong internal consistency (Cronbach's alpha=0.89), convergent (r(98)=0.65, p<0.001) and discriminant validity, and test-retest reliability (intra-class correlation=0.76). An exploratory factor analysis of OASIS revealed a single latent component. CONCLUSIONS: OASIS is an obesity-specific instrument that comprehensively measures subjective obesity awareness. OASIS can be used in epidemiological studies, intervention trials and clinical practice to assess the impact of obesity awareness on treatment adherence and outcomes.
AIMS: Impaired illness awareness or not accepting that one has obesity is an understudied phenomenon that may negatively influence treatment adherence and clinical outcomes. The purpose of this study was to perform a systematic review of available measures of obesity awareness, and subsequently develop and validate a novel scale that measures the core domains of obesity awareness. METHODS: A systematic review of the literature revealed no illness specific measure of subjective obesity awareness. As such, we designed the Obesity Awareness and Insight Scale (OASIS) to assess the following core domains of illness awareness: General Illness Awareness,, Symptom Attribution,, Awareness of Need for Treatment and the Negative Consequences attributable to the illness (www.illnessawarenessscales.com). Participants (n=100) were recruited from an online survey platform to assess the psychometric properties of OASIS. RESULTS: The OASIS demonstrated strong internal consistency (Cronbach's alpha=0.89), convergent (r(98)=0.65, p<0.001) and discriminant validity, and test-retest reliability (intra-class correlation=0.76). An exploratory factor analysis of OASIS revealed a single latent component. CONCLUSIONS: OASIS is an obesity-specific instrument that comprehensively measures subjective obesity awareness. OASIS can be used in epidemiological studies, intervention trials and clinical practice to assess the impact of obesity awareness on treatment adherence and outcomes.
Entities:
Keywords:
Illness awareness; illness denial; insight into illness; obese; obesity
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