Completed OBSERVATIONAL NCT01455753

The Effect of Proximity on Flu-Shot Participation

Sponsor: National Bureau of Economic Research, Inc.

Interventions Base Proximity Functional Proximity

Updated 8 times since 2017 Last updated: Dec 14, 2017 Started: Oct 31, 2011 Primary completion: May 31, 2012 Completion: May 31, 2012

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This observational or N/A phase trial investigates Human and Influenza and is currently completed. National Bureau of Economic Research, Inc. leads this study, which shows 8 recorded versions since 2011 — indicating limited longitudinal coverage. Longitudinal tracking of infectious disease trials helps identify durability of treatment effects.

Status Flow

Change History

8 versions recorded

Sep 2025 — Present [monthly]

Completed
Sep 2024 — Sep 2025 [monthly]

Completed
Jul 2024 — Sep 2024 [monthly]

Completed
Jan 2021 — Jul 2024 [monthly]

Completed
Jun 2018 — Jan 2021 [monthly]

Completed

▶ Show 3 earlier versions

Apr 2018 — Jun 2018 [monthly]

Completed

Phase: NA → None
Jan 2018 — Apr 2018 [monthly]

Completed NA
Jan 2017 — Jan 2018 [monthly]

Completed NA

First recorded

Oct 2011

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

National Bureau of Economic Research, Inc.
National Institute on Aging (NIA)

Data source: National Bureau of Economic Research, Inc.

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• St Louis, United States