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The Effect of Monetary Incentive on Survey Response for Vulnerable Children and Youth

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ClinicalTrials.gov Identifier: NCT01741675
Recruitment Status : Completed
First Posted : December 5, 2012
Last Update Posted : February 27, 2015
Sponsor:
Information provided by (Responsible Party):
VIVE - The Danish Centre of Applied Social Science

Brief Summary:
ABSTRACT The purpose of the study is to investigate if a monetary incentive can increase the response rate for vulnerable children and youth in a postal survey. A secondary purpose is to test if monetary incentive has an effect on the content of answers in a postal survey. The study is a randomized controlled trial where participants will be randomly allocated to receive a questionnaire together with a €15 voucher for a supermarket or to only receive a questionnaire. Data are taken from an intervention study aiming at creating network for different groups of vulnerable children and youth aged 8-23 years. The questionnaire survey in the present study is a follow up survey of the original study which are performed 1-2½ years after the participant have left the study. Recruitment to the original study is still ongoing and the investigators expect the total participation to be around 250. In the primary analysis the investigators will estimate the relative risk (RR) to assess whether there is a difference between group allocation and questionnaire response rate. The investigators will adjust for age in the analysis. In the secondary analyses the investigators will test whether scores on the five SDQ scales are different between group allocations. The investigators will adjust for the covariates age and gender, since the scores may depend on age and gender (4).

Condition or disease Intervention/treatment Phase
Quality of Life Behavioral: Questionnaire and monetary incentive Behavioral: Questionnaire only Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 270 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: The Effect of Monetary Incentive on Survey Response for Vulnerable Children and Youth
Study Start Date : November 2012
Actual Primary Completion Date : August 2014
Actual Study Completion Date : August 2014

Arm Intervention/treatment
Experimental: Monetary incentive
The intervention group will receive a postal questionnaire together with a voucher worth €15 for the largest supermarket chain in Denmark. Non-responders will after three weeks receive a reminder together with another copy of the questionnaire. In both cases the questionnaire will be sent with a cover letter and a reply paid return envelope.
Behavioral: Questionnaire and monetary incentive
Control
The control group will only receive a postal questionnaire. Non-responders will after three weeks receive a reminder together with another copy of the questionnaire. In both cases the questionnaire will be sent with a cover letter and a reply paid return envelope.
Behavioral: Questionnaire only



Primary Outcome Measures :
  1. Response rate [ Time Frame: up to 10 weeks after receiving the questionnaire ]
    The primary outcome measure will be questionnaire response rate which is defined as the proportion of questionnaires returned by participants.


Secondary Outcome Measures :
  1. The secondary outcomes will be scores on the five multiitems scales in the strengths and difficulties questionnaire [ Time Frame: up to 10 weeks after receiving the questionnaire ]
    The secondary outcomes will be scores on the five multiitems scales in the strengths and difficulties questionnaire



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Ages Eligible for Study:   10 Years to 30 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Participants are taken from an established intervention study aiming at creating network for different groups of vulnerable children and youth aged 10-23 years. The groups comprise: children in foster care, former foster youth, children of mental ill parents, children of parents with alcohol abuse and children raised in violent families. Participants who have given informed consent to take part in the evaluation of the established intervention study and thereby agree to fill out questionnaires and report their unique personal identification number are eligible to take part in the study.

Exclusion Criteria:

  • Based on the participants unique personal identification number (CPR-number in the Danish Civil Registration System) the Central Office of Civil Registration will provide us with addresses of the participants. Participants, who are not available in the Civil Register either because participants are dead, immigrated or have requested survey exemption, are excluded from the study. Participants who have reported incomplete identification number will also be excluded.

Information from the National Library of Medicine

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): NCT01741675


Locations
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Denmark
SFI - The Danish National Centre for Social Research
Copenhagen, Denmark, DK-1052
Sponsors and Collaborators
VIVE - The Danish Centre of Applied Social Science
Investigators
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Principal Investigator: Jan H Pejtersen, Ph D SFI - The Danish National Centre for Social Research
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: VIVE - The Danish Centre of Applied Social Science
ClinicalTrials.gov Identifier: NCT01741675    
Other Study ID Numbers: SFI - 2251
First Posted: December 5, 2012    Key Record Dates
Last Update Posted: February 27, 2015
Last Verified: February 2015
Keywords provided by VIVE - The Danish Centre of Applied Social Science:
Questionnaires
Quality of Life
Response rate