title: Summary of the discussion: what have we learned about population-based investigations?
authors.affiliation: Department of Emergency Medicine, Oregon Health Sciences University, School of Medicine, Portland 97201-3098, USA. hedgesj@ohsu.edu
authors.forename: J R
authors.initials: JR
authors.lastname: Hedges
mesh_terms: D018672:Community Health Planning; D016208:Databases, Factual; D006302:Health Services Research; D006801:Humans; D017063:Outcome Assessment, Health Care / Q000379:methods*; D011159:Population Surveillance; D015397:Program Evaluation; D012041:Regional Medical Programs / Q000592:standards* / Q000706:statistics & numerical data; D014193:Trauma Centers / Q000592:standards* / Q000706:statistics & numerical data; D014481:United States / Q000453:epidemiology; D014947:Wounds and Injuries / Q000453:epidemiology*