If respondents reported moderate or severe disability on any of the six surveys, they were classified as not having a high quality of life or excellent health. Just over half (or 50.8 percent) of the respondents started out as "thrivers," but by the end of the 10 years, only 8 percent of the respondents were considered thrivers. At the end of the study period, 47 percent of the respondents were classified as not having a high quality of life or excellent health. Thirty-six percent had died and 9 percent were institutionalized.
"Even though the study was conducted in Canada, the findings are certainly applicable to the United States and other industrialized nations," says Bentson McFarland, MD, Ph.D., co-author and professor of psychiatry, public health and preventive medicine at Oregon Health & Science University. "Our population here in the United States is similar demographically to Canada's, and both health care systems rely on the same underlying technologies."
The study was funded by a grant from the National Institute on Aging. Authors include Mark S. Kaplan, Ph.D., and Nathalie Huguet, PhD, from Portland State University; Heather Orpana, Ph.D., from Statistics Canada and the University of Ottawa; David Feeny, Ph.D., from the Kaiser Permanente Center for Health Research and Health Utilities Incorporated; Bentson H. McFarland, MD, Ph.D., from Oregon Health & Science University, and Nancy Ross, Ph.D., at McGill University in Canada.
Author David Feeny has a proprietary interest in Health Utilities Incorporated (HUInc.), Dundas, Ontario, Canada. The HUI survey instrument used in this study was developed in cooperation with the Canadian government. Neither Feeny nor HUInc. received any monetary reimbursement for use of the survey.
About the Kaiser Permanente Center for Health Research
Kaiser Permanente's Center for Health Research, founded in 1
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