AARR (1/3): introduction and definition

Since the adoption at the World Health Assembly in 2012 of 6 nutrition targets for 2025 (WHO, 2012) and their integration in the Sustainable Development Goals, two questions are raising growing attention:

  1. What is the current trend of the six nutrition indicator?
  2. Is the current trend sufficient to reach the target?

The current trend is measured by the “current AARR” (Average Annual Reduction Rate). The “required AARR” provides an estimation of the AARR necessary to reach the target.

Definition of the AARR by the World Health Organisation
The Annual Average Rate of Reduction (AARR) is the average relative percent decrease per year in prevalence or rate. Thus, a positive sign indicates reduction or downward trend, while a negative sign indicates increase, or upward trend.

Source: WHO, AARR definition and technical notes.

The AARR is mainly used for stunting but it can be used for other indicators as well.

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