The EMJClub Emergency Medicine Podcast

Therapeutic Studies:

• Odds ratios vs. relative risk
• Number needed to treat (NNT)
• Non-inferiority trials
• Survival analysis
• Hazard ratios
• Attrition bias

Diagnostic Studies:

• Interval likelihood ratios
• Bias in studies of diagnostic accuracy
• Incorporation bias
• Receiver operating characteristic (ROC) curves

Miscellaneous

• The p-value
• Publication bias
• Funnel plots
• How to read a forest plot
• Hypothesis testing

CMAJ Tips for learner of EBM series:

• Relative risk reduction , absolute risk reduction, and NNT
• Measures of precision (confidence intervals)
• Observer variability (kappa statistic)
• Heterogeneity in systematic reviews
• Spectrum bias