11  Design methods ✎ Very rough draft

11.1 Recruitment rates

  • Plausibility of reported recruitment rates

11.2 Attrition rates

  • Plausibility of reported attrition/dropout rates

11.3 Randomisation methods

11.3.1 Differences at baseline

  • Carlisle method
  • Baseline balance checks and variants

11.3.2 Randomisation plausibility

  • E.g., claimed to randomise students to groups for an intervention, but it would have to be at the level of classrooms or schools
  • Binomial/multinomial distribution checks: only useful for testing weirdly unbalanced assignment, not too-perfectly balanced, as it’s technically the most probable outcome