Importance: consensus on the importance of the element, as a fundamental and universal reflection of performance of PHC systems Breadth: sensitive enough to be relevant for more than one, or even several, elements of PHC systems Uniform interpretation: consensus on global interpretation and approach to assessment or measurement, including similar types of data sources used in different settings Reliability and availability of information: more likely to be assessed using reliable and widely available sources of information across different country settings Part of existing tool: wherever possible, already reflected in existing PHC assessment tools |