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. Author manuscript; available in PMC: 2012 Feb 15.
Published in final edited form as: Ann Intern Med. 2011 Feb 15;154(4):217–226. doi: 10.1059/0003-4819-154-4-201102150-00001

Table 3. Per-Person Quality-Adjusted Life-Years Lost Owing to Obesity and Knee Osteoarthritis in the U.S. Population Aged 50 to 84 Years.

Race and Sex Total Per-Person Quality-Adjusted Life-Years Lost Attribution of a Single Condition to Total Quality-Adjusted
Life-Years Lost in Persons With Both Obesity and Knee
Osteoarthritis*
Osteoarthritis-Free
and Obese		 Knee Osteoarthritis
and Nonobese		 Knee Osteoarthritis
and Obese		 Quality-Adjusted Life-Years Lost
Owing to Knee Osteoarthritis		 Quality-Adjusted Life-Years
Lost Owing to Obesity
Black
 Women 2.611 1.967 3.750 1.836 1.914
 Men 2.540 1.920 3.348 1.621 1.728
Hispanic
 Women 2.656 2.012 3.863 1.917 1.946
 Men 2.316 2.041 3.529 1.864 1.665
White
 Women 2.533 1.838 3.554 1.713 1.841
 Men 2.325 1.824 3.338 1.639 1.700
  Population average 2.461 1.857 3.501 1.710 1.792
*

For persons with both knee osteoarthritis and obesity, condition-attributable quality-adjusted life-year losses were assigned for obesity and knee osteoarthritis in proportion to the quality-adjusted life-year losses attributable to each condition alone. First, only quality-adjusted life-year losses attributable to knee osteoarthritis in persons with knee osteoarthritis were estimated. Next, only quality-adjusted life-year losses attributable to obesity in persons with obesity were estimated. The size of each of these 2 estimates relative to their sum served as the “weights” used to allocate the quality-adjusted life-year losses predicted by the Osteoarthritis Policy Model for persons with both conditions.