What kind of key questions can we ask for collecting data specifically?

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Thank you very much.

Of course. Evaluations could be categorized into three groups: process evaluation, outcome evaluation (or impact evaluation) and economic evaluation (cost-effectiveness analysis and cost-benefit analysis).

What are the three types of evaluation? Can you explain more, please?

Key evaluation questions are developed depending on the evaluation type. Generally, three sets of questions are frequently asked, corresponding to the three types of evaluations.