HLTB15H3 Chapter 6: Chapter 6 Study Guide
Document Summary
Chapter six the p r inciples of research. Non-significant research results tend to remain in internal departmental report, known as the grey literature. Manual searches sometimes helpful because all relevant articles will not necessarily be indexed under the appropriate key words. Also, not all relevant articles will be indexed within one database; for example, aging journals found indexed in social science but not medical databases. Data extraction proforma for empirical research reviews should include, at minimum: Study design (experimental by type; observational by type); Sample size, coverage, and evidence of statistical power; Measurement tools with evidence of reliability and validity; Meta-analyses = observational studies of the body of evidence; quantitative. Two main models in meta-analysis are fixed effects (=which assume that variability of results between studies is due to random variation), and random effects (=which assume a different underlying effect for each study). Important for reliability and validity of data, plus the reduction of bias.
