Since 1998, the National Longitudinal Survey of Public Health Systems (NALYSYS) has followed a nationally representative cohort of U.S. communities to measure the implementation and impact of multi-sector population health improvement activities. Please see the NALSYS page and FAQs for more information about the survey. The following studies were conducted by the Systems for Action intramural team using NALSYS data. Some of the work below is individual publications while some are larger bodies of work with multiple publications and presentations.