How to read a paper : the basics of evidence-based medicine / Trisha Greenhalgh.

Why read papers at all?
Searching the literature
Getting your bearings: what is this paper about?
Assessing methodological quality
Statistics for the non-statistician
Papers that report trials of drugs and other simple interventions
Papers that report trials of complex interventions
Papers that report diagnostic or screening tests
Papers that summarise other papers (systematic reviews and meta-analyses)
Papers that tell you what to do (guidelines)
Papers that tell you what things cost (economic analyses)
Papers that go beyond numbers (qualitative research)
Papers that report questionnaire research
Papers that report quality improvement case studies
Getting evidence into practice.