Critical Appraisal : Interpreting statistics

Online modules (each takes minutes to complete):

• Confidence levels - an introduction
• Determining the clinical importance of trial results
• Numbers needed to treat (NNT) and numbers needed to harm (NNH)
• Relative risk reduction (RRR) and absolute risk reduction (ARR)

Books on statistics (please check the library catalogue to search for more books on this subject) 

Applied Statistics for Social and Management Sciences

Basic skills in statistics: a guide for healthcare professionals

Introductory Statistics for Business and Economics

Medical statistics : a guide to SPSS, data analysis, and critical appraisal

Statistics for political analysis : understanding the numbers 

Statistics at square one

Other resources

5 Tips For Avoiding P-Value Potholes 

P-values and confidence intervals  - Bandolier guide