CClinicalTrials.gg
CompletedNCT00565344Updated Jul 24, 2026

Medicaid Disenrollment: Intrastate Emergency Department Impact

An observational study in Medicaid Enrollment Status, sponsored by Vanderbilt University. Completed. Per ClinicalTrials.gov, last updated 2026-07-24.

Sponsored by Vanderbilt University · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
5,000,000
Sex
All
01

Study summary

We will obtain data from the robust Agency for Healthcare Reimbursement and Quality (AHRQ) Healthcare Utilization Project (HCUP), as well as from the State of Tennessee. If our hypotheses are true, such data will provide strong evidence that Medicaid disenrollment has a negetive health impact on uninsured populations. The data may also provide evidence for increased public funding of safety-net EDs after Medicaid disenrollment.

02

Conditions studied

  • Medicaid Enrollment Status

Keywords

  • Medicaid
  • Disenrollment
03

In context

Lead sponsor

Vanderbilt University is the lead sponsor of 508 studies on the registry; 19 are open to participants now.

Of its 7 completed or terminated interventional studies of FDA-regulated products, 5 (71%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Data will be obtained through two datbases. All patients visiting an ED in Tennessee over a 3 year period are included.

Inclusion criteria

  • data will be obtained from the Agency for Healthcare Reimbursement and Quality (AHRQ) Healthcare Utilization Project (HCUP)

Exclusion criteria

Exclusion Criteria:

  • n/a
05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
5,000,000 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. The proportion of ED visits from uninsured and TennCare patients after TennCare disenrollment

    The proportion of ED visits from uninsured and TennCare patients after TennCare disenrollment

    Time frame: Upon record review

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00565344
Lead sponsor
Vanderbilt University
Responsible party
Ben Heavrin (Assistant Professor of Emergency Medicine, Vanderbilt University) — Principal investigator
First posted
Nov 29, 2007
Start date
Jul 2007
Primary completion
Jun 2013
Completion
Jun 2013
Last update
Jul 24, 2026

Study contacts

Benjamin S Heavrin, MD
principal investigator · Vanderbilt University Medical Center

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.

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