Proof and Policy from Medical Research Evidence, Figure 1. Historical Trends in North American Philosophy toward Medical Care Special issue contains articles from expert meeting, 'Evidence: Its Meanings and Uses in Law, Medicine and Health Care. Return to Document Current as of April 2000 Internet Citation: Proof and Policy from Medical Research Evidence, Figure 1. Historical Trends in North American Philosophy toward Medical Care. April 2000. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/evidence-based-reports/jhppl/mulrfig1.html