Date Published: November 2017
De-duplication is very important in the AHAR because proper de-duplication ensures that a homeless person is counted once only in the national estimates. De-duplication should be done within each reporting category, rather than across all persons in a community. Put differently, a person can be reported in multiple reporting categories if that person was served accordingly—e.g., as an individual in an emergency shelter and as a person in a family in transitional housing. But the person should be counted once only within the reporting category. Thus, if a person enters and exits an emergency shelter (ES-IND) multiple times, this person should be counted once in the ES-IND reporting category.
The Summary reporting category asks communities to report the number of people who were served in multiple reporting categories. For example, the Summary tables ask communities to report the total number of people who used ES-IND and ES-FAM or ES-IND, ES-FAM, and TH-IND, etc. This information is used to produce a de-duplicated count of all persons served for the entire AHAR jurisdiction.