This study will perform a pre-post evaluation of the VA-IHIE implementation, with a concurrent control group, among Veterans seen at the Indianapolis VA. Data on care received by Veterans will be obtained for one year before, and one year after, VA-IHIE enrollment. Patients will be recruited into the VA-IHIE program in a rolling manner over the course of a year, and thus will have different calendar intervals of follow-up. For purposes of evaluation, investigators will approach the VA-IHIE implementation as a patient-directed intervention given that additional information available from the exchange is available only on a patient-by-patient basis, i.e., a provider cannot use exchange information available for one patient in the care of another. Although the VA-IHIE program will be implemented at the site level, patients will be enrolled individually.
