The WHO stepwise approach to Surveillance (STEPS) is a simple, standardized method for collecting, analyzing and disseminating data in WHO member countries. It includes:
The WHO STEP wise approach to Surveillance (STEPS) is a simple, standardized method for collecting, analysing and disseminating data in WHO member countries.
By using the same standardized questions and protocols, all countries can use STEPS information not only for monitoring within-country trends, but also for making comparisons across countries.
World health organisation 
https://www.who.int/ncds/surveillance/steps/en/
Macro country economic monitoring and evaluation
Control of diseases at international level
Access data at short intervals
All of the above