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A decision analysis model.BACKGROUND. diet pills A Markov decision analysis model was homespun to evaluate survival after laparoscopic Roux-en-Y gastric bypass diet pills that surgery compared with a diet and exercise program for a 45-year-old woman with a body mass index (BMI) diet pills of 40 kg/m(2). We assumed diet pills for women that successful surgery resulted in a reduction of BMI to 30 kg/m(2). The undiscounted life expectancy after surgery diet pills for women was 69.7 years compared with 67.3 years for a diet diet pills uk diet and exercise program (an absolute increase in life expectancy of 2.4 years, a relative increase in life expectancy of 10.8%). In a decision analysis model, laparoscopic gastric bypass surgery diet pills that work fast for morbid obesity was associated with a substantially longer survival than diet and exercise therapy. Baseline mortality data were derived from published tables of vital statistics, and the relative diet pills ratings risks of death associated with obesity (relative to normal weight) were taken from epidemiologic studies. An operative mortality of 0.4%; a probability of weight loss (with or without diet pills) after surgery of 80%; a rate of weight loss (with or without diet pills) on a diet and exercise program, 20% at two years; a rate of regain of lost weight, 95% at two years; a relative risk of death for a BMI of 40 kg/m(2), 2.70; and a relative risk of death for a BMI of 30 kg/m(2), 1.51. 2003 by the American College of Surgeons. The baseline assumptions were. Using decision analysis we simulated a trial comparing diet and exercise therapy to laparoscopic gastric bypass surgery to determine which approach resulted in longer life expectancy. A comparison of diet and exercise therapy versus laparoscopic Roux-en-Y duodenal bypass surgery for morbid obesity. Sensitivity analyses assumed discounting at 5%/y, and sho that surgery was associated with a longer expectation of life when the risk of operative mortality was less than 10%, and when the probability of weight loss (with or without diet pills) after surgery was greater than 4%. In the absence of randomized controlled trials that directly compare medical versus surgical treatment of morbid obesity, decision analysis is a useful tool to help determine the optimal treatment strategy.
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