Selecting appropriate indicators involves several steps: - Relevance: Ensure the indicator is relevant to the health issue or program being evaluated. - Validity: The indicator should accurately measure what it is intended to. - Reliability: The indicator should produce consistent results when measured under similar conditions. - Sensitivity and Specificity: The indicator should be sensitive enough to detect changes in the health status and specific enough to measure only the intended effect. - Feasibility: Consider the ease of data collection and the availability of resources to measure the indicator.