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<p>This document provides the background, rationale and description of the standard approach followed by the UNICEF-WHO-World Bank Joint Malnutrition Estimates (JME) group to generate national estimates for Sustainable Development Goal (SDG) indicators 2.2.1 (child stunting), 2.2.2 (1) (child overweight) and 2.2.2 (2) (child wasting), as well as regional and global aggregations for the three indicators.<br><br>The JME process for generating national, regional and global estimates is described along with:<br><br>- compilation of data sources with anthropometric data<br>- production of estimates of child malnutrition and data quality measures through use of standardized methods applied to country microdata when available<br>- review of anthropometric data sources, considering data collection methodology and data quality assessment and trends inclusion criteria for data sources<br>- the child malnutrition database<br>- modelled estimates for child stunting and child overweight<br>- production of national, regional and global trends</p>