Study Search Results Your query returned 5 results. Series results are grouped under the most relevant study. You can ungroup series results. Use the search box below to revise your search, or start a new search. Results per page: 25 50 100 Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Most Downloaded (?) Study Title/Investigator 1. Effects of Preferred Provider Organizations on Health Care Use and Costs: Pooled Cross-Sectional Time Series, First Quarter 1988 Through First Quarter 1990 (ICPSR 6373) Smith, Dean G. 2. National Survey of Access to Medical Care, 1975-1976 (ICPSR 7730) Andersen, Ronald; Aday, Lu Ann 3. Oregon Health Insurance Experiment, 2007-2010 (ICPSR 34314) Finkelstein, Amy; Baicker, Katherine 4. Physician Responses to Medicare Payment Reductions: Impacts on the Public and Private Sectors, 1988-1991 (ICPSR 6563) Rice, Thomas; Stearns, Sally 5. Use of Radiology and Laboratory Tests Among Selected Inpatients in Canadian and United States Hospitals, 1990-1991 (ICPSR 6539) Katz, Steven J.