Measurements of health indicators are rarely available for every population and period
of interest, and available data may not be comparable. The Guidelines for Accurate
and Transparent Health Estimates Reporting (GATHER) define best reporting practices
for studies that calculate health estimates for multiple populations (in time or space)
using multiple information sources. Health estimates that fall within the scope of
GATHER include all quantitative population-level estimates (including global, regional,
national, or subnational estimates) of health indicators, including indicators of
health status, incidence and prevalence of diseases, injuries, and disability and
functioning; and indicators of health determinants, including health behaviours and
health exposures. GATHER comprises a checklist of 18 items that are essential for
best reporting practice. A more detailed explanation and elaboration document, describing
the interpretation and rationale of each reporting item along with examples of good
reporting, is available on the GATHER website.