 |
 |
*Apologies for cross-posting* Dear List Members, Grading the evidence for environmental health research: There are some excellent 'levels of evidence' and 'grades of recommendation' tables for therapeutic/preventive studies and the Centre for Evidence Based Medicine has helpfully expanded this system to include studies on prognosis, diagnosis, harm and economic analysis (http://cebm.jr2.ox.ac.uk/index.extras). Is anybody aware of an adaption, or a different, system which assists with the classification of the (mostly observational) research studies on the impact of society/environment on health. Many studies are surveys/questionnaires (controlled with similar groups, 'before and after', or uncontrolled). Some studies qualitatively measure opinion only while others look at measurable and verifiable effects on health/quality of life and there is a large variation in sample size. I will collate and circulate any suggestions back to these lists. Many thanks, Alison Weightman Dr Alison Weightman Information Resources Manager Health Evidence Bulletins - Wales Duthie Library University of Wales College of Medicine, Cardiff, CF4 4XN. UK e-mail: [log in to unmask] Telephone: +1222 745142 Fax: _+1222 743651 Web site: http://www.uwcm.ac.uk/uwcm/lb/pep %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%