Method and rigour
Check command of study design: cohort versus case-control selection, confounding control, sample size calculation, and which regression models they ran in R, SAS, or Stata.
Evidence to listen for
- Follows and can justify an established methodology
- Understands contamination, bias, and chain of custody as they apply to the field
- Knows the limits of their techniques and says so
- Documents procedure so results are reproducible and defensible
Five-point scoring guide
Careless method; unaware of contamination, bias, or procedural integrity.
Knows procedures but applies them inconsistently; gaps in documentation.
Sound standard practice; less certain outside familiar techniques.
Rigorous and well documented; understands the limits of each method.
Names specific designs used, justifies confounder adjustment and bias controls, and shows fluency in survival or multivariable regression modelling.