Databases This important infrastructure will be shared by all disciplines and consists of ongoing population studies, improved linkage to existing sources of information (e.g., Medicare data tapes), library supports such as the National Library of Medicine, and computer technology.

Research in geriatrics and gerontology will require the expansion of existing population studies (e.g., National Health and Nutrition Examination Survey) and the institution of new longitudinal demographic and epidemiological studies. The cost of such studies covers a wide range, from $1.5 million to $2.0 million per year (Office of the Director, NIA) for the Health and Retirement Study funded by the NIA, to $5 to $10 million per year (G.M. Martin, University of Washington, personal communication, 1989) for large cardiovascular prospective studies. The committee estimates that population studies would come to about $30 million per year. Another $10 million per year, shared among the disciplines, would be needed to add computer technology, to fund improved access to existing databases, and to increase the capacity of reference sources such as the National Library of Medicine.

All told, the estimated nonassigned infrastructure support totals $40 million per year. Total costs for infrastructure, not adjusted for inflation, are estimated at $50.5 million per year, phased in over 5 years.

Funds for Construction

Construction costs include those for 10 additional multidisciplinary centers and those for out-of-center animal facilities and laboratories. The cost of construction of the Mental Retardation Research Centers supported by the National Institute of Child Health and Human Development was, on average, $10 million per center; the federal government provided 75 percent of the funding, and local and state organizations made up the difference. Using these figures, with the federal government providing 75 percent of the cost of construction, the committee estimates that the total one-time cost for 10 new geriatric research centers will be $75 million, not adjusted for inflation, phased in over 5 years. Center costs include animal housing.

Additional animal housing will cost $300 to $400 per square foot (Office of Resources Development, NIA). If 10 animal facilities are built outside the centers, and if total floor space at each of these additional institutions comes to 1,000 square feet (assuming an average of 5 separate projects at each institution), total costs will be about $3.5 million. Costs to construct new laboratories, based on



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