Application and validation of the weight efficacy lifestyle (WEL) questionnaire among type 2 diabetes mellitus patients in Malaysia

@#Introduction: Self-efficacy for eating predicts successful weight loss and maintenance in Type 2 Diabetes Mellitus (T2DM) individuals. The Weight Efficacy Lifestyle (WEL) questionnaire determines self-efficacy for controlling eating. This study aims to validate the Malay-translated version of the WEL questionnaire and to establish the cut-off scores to define the level of eating self-efficacy in Malaysian T2DM individuals. Methods: A total of 334 T2DM individuals, aged 55.0±9.0 years, were recruited from a primary healthcare clinic based on sampling ratio. Medical records were reviewed for eligibility. Inclusion criteria included BMI ≥23kg/m2, and no severe diabetes complications. The WEL questionnaire assessed eating resistance during negative emotions, food availability, social pressure, physical discomfort and positive activities, and was back translated into Malay language. Self-efficacy was rated on a 0-9 scale with higher WEL scores indicating greater self-efficacy to resist eating. Factor analysis established the factor structure of the WEL questionnaire. Inter-item and item-total correlations determined construct validity while internal consistency described the reliability of the structure. Results: A two-factor structure accounting for 49% of variance was obtained, and it had adequate reliability, as indicated by Cronbach’s α of 0.893 and 0.781 respectively. Item-total correlations of r>0.700, p<0.01 and inter-item correlations of r<0.500, p<0.01 demonstrated construct validity. Cut-off scores of ≥44 and ≥32, respectively for factor one and two defined high eating self-efficacies in T2DM individuals. Conclusion: The Malaytranslated version of the WEL questionnaire appears to be a valid and reliable tool to assess self-efficacy for controlling eating behaviour in Malaysian T2DM population.

Concurrent validity of the malay version perceived stress scale (PSS-10)

This study aimed to assess the concurrent validity of the Malay version of the Perceived Stress Scale (PSS-10) PSS-10 item. Methods: A crosssectional study was conducted among all students in a medical faculty in Malaysia. The questionnaire included three parts; socio-demographic correlates, PSS-10 and the validated Malay version of Depression Anxiety and Stress Scale-21 item (DASS-21). Spearman's correlation coefficient was used in the analysis. Stress subscale of DASS -21 correlated positively with the total score of PSS-10 (r= +0.50, p<0.001), positively with the negative subscale of PSS-10 (r=+0.36, p<0.001) and negatively with the positive subscale of PSS-10 (perceived coping) (r= -0.33, p<0.001). Conclusion: The Malay Version of PSS-10 has fair correlation with the stress subscale of DASS-21. This confirmed the concurrent validity of this scale, which further strengthened the previous evidence that the Malay version of PSS-10 was a valid tool to measure stress in Malaysian university students. ASEAN Journal of Psychiatry, Vol. 15 (1): January – June 2014: 8-13.

Prevalence of depressive disorders in the elderly

Community-based mental health studies have revealed that the point prevalence of depressive disorders in the elderly population of the world varies between 10% and 20%, depending on cultural situations. A retrospective study based on analysis of various study reports was conducted, to determine the median prevalence rates of depressive disorders in the elderly population of India and various other countries in the world. All the studies that constituted the sample were conducted between 1955 and 2005. Included are only community-based, cross-sectional surveys and some prospective studies that had not excluded depression at baseline. These studies were conducted on a homogenous community of the elderly population in the world, who were selected by a simple random sampling technique. After applying the inclusion and exclusion criteria on published and indexed articles, 74 original research studies that surveyed a total of 487275 elderly individuals, in the age group of 60 years and above, residing in various parts of the world, were included for the final analysis. The median prevalence rate and its corresponding interquartile range were calculated. The chi-square test and chi-square for linear trend were applied. A P value of <.05 was considered as statistically significant. The median prevalence rate of depressive disorders in the world for the elderly population was determined to be 10.3% [interquartile range [IQR], 4.7%-16.0%]. The median prevalence rate of depression among the elderly Indian population was determined to be 21.9% [IQR, 11.6%-31.1%]. Although there was a significant decrease in the trend of world prevalence of geriatric depression, it was significantly higher among Indians, in recent years, than the rest of the world