The Effect of Proximity on Flu-Shot Participation
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|ClinicalTrials.gov Identifier: NCT01455753|
Recruitment Status : Completed
First Posted : October 20, 2011
Last Update Posted : December 18, 2017
|Condition or disease||Intervention/treatment|
|Influenza Human||Other: Functional Proximity Other: Base Proximity|
We study the 2011 influenza vaccine uptake of employees at the headquarters of a health benefits administrator in the United States. These employees are generally not health care personnel. All of them have health insurance. Of the company's total workforce (including those not based at the headquarters), 26% are African Americans and 37% are racial minorities.
There are 2 main buildings at the company headquarters. Building One houses 520 employees and is the site of the vaccination clinic; Building Two houses 1281 employees. The 2 buildings are 131 meters apart and connected by an enclosed passageway. The clinic was located near the cafeteria in Building One and adjacent to the passageway connecting the 2 buildings. The clinic was conducted from October 19 to 20, 2011, and it was advertised during the 3 weeks prior.
The company requires employees to swipe a personalized electronic badge to open the external doors of its buildings, which include the doors to the passageway between the buildings. The company provided us data on the date and time of each swipe in September and October 2011. If an employee swipes her badge and holds the door open for another employee, we do not observe that other employee. The badge swipe data are therefore an incomplete measure of all movements between the buildings. The company also gave us data on employee characteristics and vaccination uptake, scaled architectural plans of the buildings, and employee desk maps.
|Study Type :||Observational|
|Actual Enrollment :||1801 participants|
|Official Title:||The Effect of Proximity on Flu-Shot Participation|
|Study Start Date :||October 2011|
|Actual Primary Completion Date :||May 2012|
|Actual Study Completion Date :||May 2012|
A total of 1,801 employees of a health benefits administrator that held a free workplace influenza vaccination clinic.
Other: Functional Proximity
Using each employee's building entry/exit swipe card data, we test whether functional proximity—the likelihood that the employee walks by the clinic for reasons other than vaccination—predicts whether the employee gets vaccinated at the clinic.
Other: Base Proximity
We also test whether base proximity—the inverse of walking distance from the employee's desk to the clinic—predicts vaccination probability.
- Receipt of influenza vaccine [ Time Frame: One week ]The investigators will measure whether proximity to a flu shot clinic effected whether an employee received an influenza vaccine.
- Absenteeism [ Time Frame: The investigators will follow employees' absenteeism for five to six months ]The investigators will measure absenteeism in employees who received a flu shot versus employees who did not receive a flu shot.
- Demographic characteristics on flu shot participation [ Time Frame: Up to 3 years ]The investigators will explore how demographic characteristics correlate to employees receiving an influenza vaccination.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01455753
|United States, Missouri|
|Saint Louis, Missouri, United States, 63121|
|Principal Investigator:||David I Laibson, Ph.D.||National Bureau of Economic Research, Harvard University|