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Pionerprojektet
Last registered on July 31, 2015

Pre-Trial

Trial Information
General Information
Title
Pionerprojektet
RCT ID
AEARCTR-0000793
Initial registration date
July 31, 2015
Last updated
July 31, 2015 6:01 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
Aalborg University
Other Primary Investigator(s)
Additional Trial Information
Status
On going
Start date
2010-12-01
End date
2015-09-30
Secondary IDs
28-2010-03
Abstract
The study tested whether an organizational level, occupational health intervention can lower the sickness absence levels and improve wellbeing for the personnel in the participating pre-schools (0-6 years). The intervention focused on improving the working environment capabilities of the safety group in each unit (local manager and employee representatives) and on implementing initiatives that improve the working environment by improving the work practices.
External Link(s)
Registration Citation
Citation
Sørensen, Ole Henning. 2015. "Pionerprojektet." AEA RCT Registry. July 31. https://doi.org/10.1257/rct.793-1.0.
Former Citation
Sørensen, Ole Henning. 2015. "Pionerprojektet." AEA RCT Registry. July 31. https://www.socialscienceregistry.org/trials/793/history/4887.
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Experimental Details
Interventions
Intervention(s)
The intervention focused on improving the working environment capabilities of the safety group in each unit (local manager and employee representatives) and on implementing initiatives that improve the working environment by improving the work practices.
Intervention Start Date
2011-09-01
Intervention End Date
2013-10-31
Primary Outcomes
Primary Outcomes (end points)
The key outcome variables were short sickness absense (spells of 14 days or less) and employee wellbeing.
Primary Outcomes (explanation)
Wellbeing was composed of three variables selected from Maslac's burnout inventory: lack of energy, restlessness, and sleep trouble
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
The randomized controls study was conducted in 44 units. The control group consisted of 34 units.
Experimental Design Details
The randomized design was embedded in a regression discontinuity design with 196 units, where 132 units were in the control group. Prior to randomization, central management aided by experts removed 25 units with particular challenges that were not considered suited for the experiment
Randomization Method
Randomization done in office by a computer
Randomization Unit
The randomization unit was the workplace.
Public pre-schools with more than 10 employees.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
78 units
Sample size: planned number of observations
1,500 employees
Sample size (or number of clusters) by treatment arms
78 units, 44 in the intervention group and 34 in the control group
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Power calculation performed before the project start showed that the RD-design had 90% power to identify a reduction of 7.5 sick days per employee per year at a 5% significance level (Type I error). The power calculation was performed in SAS 9.1 using data from a large scale sickness absence project and data from the participaring municipality’s register.
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
IRB Approval Date
IRB Approval Number
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports and Papers
Preliminary Reports
Relevant Papers