entire noninstitutional, civilian United States population. Sample Adult and Sample Child Files These two files contain information obtained from the survey response of one adult and one child (if one exists) sampled from each family contained in the family file, and can be linked up to household and family information (using the HHX and FMX variables). These two sample person files contain much more in-depth information about health conditions, physical and mental health status, health limitations, behaviors, and utilization than the family file. Their question topics are specific to either adults or children, but not both (such as occupational demographic questions in the adult file and childhood immunization questions in the child file). Much like the Person file, these two files can be used to create national estimates of all adults and children in the United States (using WTFA_SA to generalize to all adults and WTFA_SC to generalize to all children). Individuals can be matched between the Person and Sample Adult/Child files using the HHX (household), FMX (family), and FPX (person) fields. Injury and Poisoning Files The Injury and Poisoning Episode file contains event-level information about any injury event experienced by an individual within the household in the three months leading up to the interview. For each reported injury or poisoning event, a number of questions examining the severity and effect of the event were asked, such as whether a physician was consulted and what kind of injury was experienced. This episode file can be used to generalize about the frequency of all injuries experienced by Americans over a defined window of time. The final weight (WTFA) generalizes to the number of injuries that occur among the U.S. population. This file can be merged on to any of the other data files using the HHX (household), FMX (family), and FPX (person) merge fields. The Injury and Poisoning Verbatim file contains un-categorized, open-ended data provided by the respondent. This file can be linked to the cleaned Episode file using the HHX, FMX, FPX, and IPEPNO (Injury/Poisoning Episode Number) fields. Supplemental Supplemental data are available whenever funding and sponsorship allow. The topics of non-core questionnaires generally relate to a matter of current importance to policymakers or the research community. Occupational Health Supplement In 2010 and 2015, supplemental data were collected that relate to the impacts of work on health. Known as the Occupational Health Supplements, these data are available to chart using