Masters Thesis

An analysis of weight loss surgeries performed in California between 2005-2015

Background: Roughly two-thirds of American adults are classified as obese (not just over-weight), which means about two-thirds of these American adults are suspectable to many health risks related with obesity. One solution known for its high effectiveness is bariatric surgery, which are known to have much longer periods of keeping weight off compared to non-surgical treatment and solutions. This study evaluated (1) if the amount of weight loss surgeries performed per year changed in California; (2) If the rate of weight loss surgeries performed per year differ by county, and; (3) If the types of weight loss surgeries performed differ by county. Methods: This secondary data analysis used data on weight-loss surgeries from California hospitals from the Office of Statewide Health Planning and Development (OSHPD). A one-way ANOVA was done to determine if the amount of weight loss surgeries performed per year changed in California. A second one-way ANOVA was done to determine if the amount of weight loss surgeries performed per year differ by county. And a two-way ANOVA was done to determine if the types of weight loss surgeries performed differ by county. Results: Data analysis has indicated the amount of weight loss surgeries performed per year does not change, the rate of weight-loss surgeries performed per year does differ by county and the types of weight loss surgeries performed does differ by county. Conclusion: The results of this study shows significant findings. These findings can be compared to similar studies from other states, as well as other countries with high rates of weight-loss surgeries performed.

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