Critical appraisal of qualitative research. Some of the most widely methods used in qualitative research studies are described, and guidelines for critical reading of these studies are given.
Critical appraisal of economic valuations We review the methodological aspects of the economic evaluation studies and general guidelines are given for the critical aprraisal of these documents.
Critical appraisal of ecological studies. Ecological studies are those in which the study population are grouped subjects, so the level of inference is also aggregated.
Critical appraisal of clinical prediction rules. The methodology for the development of clinical prediction rules is described and recommendations are given for the critical appraisal of these documents.
Critical appraisal of meta-analysis. Guidelines for critical reading of a meta-analysis are proposed. The main points dealt with by the PRISMA declaration are also described.