Websites
CASP Checklists: how to appraise systematic reviews, trials, studies, economic evaluations & other research - provided by the Critical Appraisal Skills Programme (CASP)
Catalogue of Bias: an a-z of different types of bias that can impact upon the conducting of a study or its resulting findings - the catalogue is provided by the Centre of Evidence-Based Medicine
Understanding Health Research: how to appraise papers considering issues such as bias, replicability, correlation, causality, methodologies, populations, review, samples & scientific uncertainty - funded by the Medical Research Council
Ebooks
You can search for further resources on this topic by searching the Library Catalogue.