18  Design methods ✎ Outline

18.1 Recruitment rates

• Plausibility of reported recruitment rates

18.2 Attrition rates

• Plausibility of reported attrition/dropout rates

18.3 Randomisation methods

18.3.1 Differences at baseline

• Carlisle method
• Baseline balance checks and variants

18.3.2 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

18.4 Design irrelevance

https://pubpeer.com/publications/4BDB385898FB4AD7649DECE694B6A5#1

maybe more suitable to measurement chapter?