Statistical analysis plan checklist
Use it before data collection. Every line should have an answer in your plan.
- Research questions and hypotheses are numbered.
- Each variable has a definition, a measurement scale and a role.
- The primary outcome is named.
- Each hypothesis is matched to one primary analysis.
- The sample size is justified with its inputs.
- The handling of missing data is stated.
- Rules for outliers and exclusions are stated in advance.
- Assumption checks and fallback analyses are listed.
- Secondary and exploratory analyses are labelled.
- Corrections for multiple comparisons are specified where needed.
- The software and version are named.
- The plan is dated and shared with a supervisor or statistician.