Part 4: How do you design a study? · Module 7
Three decisions before you touch the data
How Do You Plan a CNA Study?
A CNA study is mostly won or lost at the planning table, long before R enters the picture. Three decisions matter most.
State exactly what you are trying to explain, and how you'll recognise it when you see it. For example: "Low routine immunization coverage" means DTP3 below 50%. The threshold is part of the definition, not an afterthought.
What You Will Be Able to Do
- Define a clear, measurable outcome with a threshold.
- Draw up a disciplined list of candidate conditions.
- Write down a causal theory before analysing.