The reading, writing, and arithmetic of the medical literature, part 3: critical appraisal of primary research.
OBJECTIVE: To offer suggestions that will help clinicians improve their scrutiny of the medical literature and apply these suggestions to their own medical writings. DATA SOURCES: Literature searches began at the National Library of Medicine's online database and were traced to primary sources. STUDY SELECTION: Studies were selected for their ability to provide historical background, discuss the aspects of study design and statistical analysis, and explore important facets of reading and writing medical manuscripts. RESULTS: Physician readers will become more proficient in their skills as both users and creators of the medical literature. CONCLUSIONS: Reading and interpretation of the medical literature requires a set of skills that can be learned. Similarly, good medical writing skills can be developed. Achieving these skills will enhance the clinician's practice of medicine.