Investigating Affective Attitude Question-behaviour Effects on Intention to Become an Organ Donor

Sponsor

Royal College of Surgeons, Ireland (Other)

Overall Status

Completed

CT.gov ID

NCT02825862

Collaborator

University of Stirling (Other), Manipal University (Other)

999

Enrollment

Locations

Arms

Duration (Months)

249.8

Patients Per Site

9.6

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The investigators aim to experimentally manipulate presence of questions on positive or negative affective attitudes to see if including these moderate as intention to become an organ donor. The methodology will be replicated across three international sites (RCSI Dublin, RCSI Bahrain, RCSI Perdana University).

Condition or Disease	Intervention/Treatment	Phase
Organ Donation	Behavioral: Question-behaviour effect (for affective attitudes) Behavioral: Question-behaviour effect (negatively-worded attitudes)	N/A

Study Design

Study Type:

Interventional

Actual Enrollment :

999 participants

Allocation:

Randomized

Intervention Model:

Parallel Assignment

Masking:

Single (Participant)

Primary Purpose:

Health Services Research

Official Title:

Circumventing the 'Ick' Factor: a Multi-site Randomised Trial of the Effects of Omitting Affective Attitudes to Increase Intention to Become an Organ Donor

Study Start Date :

Feb 1, 2016

Actual Primary Completion Date :

Dec 1, 2017

Actual Study Completion Date :

Apr 1, 2018

Arms and Interventions

Arm	Intervention/Treatment
No Intervention: Replication group Replication group - this group will complete the entire questionnaire, in order to replicate the findings of O'Carroll et al (2011)
Active Comparator: Omit affective attitudes Omitting affective attitudes The intervention is the omission of all questions on affective attitudes. This group will complete a similar questionnaire to the replication group, with the same number of questionnaire items, but affective attitudes will be omitted. Dummy questions (e.g. about politics) will be substituted for these deleted questions.	Behavioral: Question-behaviour effect (for affective attitudes) Investigators propose to investigate the Question-behaviour effect (omit affective attitudes). Investigators will conduct an experimental manipulation by omitting certain items from a questionnaire assessing attitudes to organ donation. Specifically, investigators will omit questions on affective attitudes. This group will complete a similar questionnaire to the comparison group, with the same number of items, but items on affective attitudes will substituted for non-affective items (e.g. on political parties). Other Names: Priming
Active Comparator: Omit negatively-worded items Omitting negatively-worded affective attitudes. This intervention is the omission of a subset of negatively-worded affective attitudinal items. This group will complete a similar questionnaire to the replication group, with the same number of items, but all negatively-worded affective attitudes will be omitted. Dummy questions (e.g. about politics) will be substituted for these deleted questions.	Behavioral: Question-behaviour effect (negatively-worded attitudes) Behavioral: Question-behaviour effect (for negatively-worded attitudes) Investigators propose to investigate the Question-behaviour effect (omit negatively-worded affective attitudes). Investigators will conduct an experimental manipulation by omitting certain items from a questionnaire assessing attitudes to organ donation. Specifically, investigators will omit questions on negatively-worded affective attitudes. This group will complete a similar questionnaire to the comparison group, with the same number of items, but items on negatively-worded affective attitudes will substituted for non-affective items (e.g. on political parties). Other Names: Priming

Arm

Intervention/Treatment

No Intervention: Replication group

Replication group - this group will complete the entire questionnaire, in order to replicate the findings of O'Carroll et al (2011)

Active Comparator: Omit affective attitudes

Omitting affective attitudes The intervention is the omission of all questions on affective attitudes. This group will complete a similar questionnaire to the replication group, with the same number of questionnaire items, but affective attitudes will be omitted. Dummy questions (e.g. about politics) will be substituted for these deleted questions.

Behavioral: Question-behaviour effect (for affective attitudes)

Investigators propose to investigate the Question-behaviour effect (omit affective attitudes). Investigators will conduct an experimental manipulation by omitting certain items from a questionnaire assessing attitudes to organ donation. Specifically, investigators will omit questions on affective attitudes. This group will complete a similar questionnaire to the comparison group, with the same number of items, but items on affective attitudes will substituted for non-affective items (e.g. on political parties).

Other Names:

Priming

Active Comparator: Omit negatively-worded items

Omitting negatively-worded affective attitudes. This intervention is the omission of a subset of negatively-worded affective attitudinal items. This group will complete a similar questionnaire to the replication group, with the same number of items, but all negatively-worded affective attitudes will be omitted. Dummy questions (e.g. about politics) will be substituted for these deleted questions.

Behavioral: Question-behaviour effect (negatively-worded attitudes)

Behavioral: Question-behaviour effect (for negatively-worded attitudes) Investigators propose to investigate the Question-behaviour effect (omit negatively-worded affective attitudes). Investigators will conduct an experimental manipulation by omitting certain items from a questionnaire assessing attitudes to organ donation. Specifically, investigators will omit questions on negatively-worded affective attitudes. This group will complete a similar questionnaire to the comparison group, with the same number of items, but items on negatively-worded affective attitudes will substituted for non-affective items (e.g. on political parties).

Other Names:

Priming

Outcome Measures

Primary Outcome Measures

Intention to become an organ donor [within 3 months]
Mean score of two 7-point items: "I will definitely sign up for organ donation and discuss this with my family in the next few months" and "How strong is your intention to sign up for organ donation and discuss this with my family in the next few months?"

Secondary Outcome Measures

Taking a donor card after the interview [Immediately at the end of the interview (i.e. that day, an average of 10-15 minutes after consenting to participate))]
"Did survey participant accept a donor card?" Yes/No

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

Agree to participate

Exclusion Criteria:

Refuse to participate

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Manipal University	Manipal	Karnataka	India	576104
2	RCSI	Dublin		Ireland	D2
3	RCSI Perdana University	Perdana	Serdang	Malaysia	43400
4	University of Stirling	Stirling		United Kingdom	FK9 4LA

Sponsors and Collaborators

Royal College of Surgeons, Ireland
University of Stirling
Manipal University

Investigators

Principal Investigator: Frank Doyle, PhD, Royal College of Surgeons in Ireland

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

Responsible Party:

Royal College of Surgeons, Ireland

ClinicalTrials.gov Identifier:

NCT02825862

Other Study ID Numbers:

REC1048b

First Posted:

Jul 7, 2016

Last Update Posted:

Mar 27, 2019

Last Verified:

Apr 1, 2018

Individual Participant Data (IPD) Sharing Statement:

Undecided

Plan to Share IPD:

Undecided

Study Results

No Results Posted as of Mar 27, 2019