Academic journal article Research Quarterly for Exercise and Sport

Development and Validation of Obesity Risk Measurement Scale

Academic journal article Research Quarterly for Exercise and Sport

Development and Validation of Obesity Risk Measurement Scale

Article excerpt

The purposes of this study were to develop and calibrate the obesity risk measurement scale (ORMS) using the Rasch model and to validate the scale through known group difference approach. Based on the literature review and consultation of content and measurement experts, the 21-item ORMS was generated. The ORMS consists of physical activity, meal, heredity, and psychology constructs. The scale was administered to 398 university students. Rasch measurement computer program, FACETS (Linacre, 2002), was used to analyze the data. Model data fit was determined by Infit and Outfit statistics ([greater than or equal to] 0.70 and [less than or equal to] 1.30). One-way analysis of variance was used to establish tile known group difference validity evidence of the ORMS. Alpha level was set at .05. Nineteen of the 21 items had good model-data fit with acceptable fit statistics. The 2 items were eliminated from the final estimation. Overall, the four rating categories functioned well; threshold advanced with category. …

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