costs., Sanitation

Recall bias and cost data

I've been working on costing a few programmes recently where the intervention happened between 3-10 years ago. Both used household surveys asking people what they spent (in cash and in kind) towards the original infrastructure output (CapEx), towards regular operational and maintenance (OpEx) and irregular capital maintenance (CapManEx). It's got me thinking about the various… Continue reading Recall bias and cost data