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

Royal College of Surgeons, Ireland

Status: Completed

Conditions: Organ Donation

Treatments: Behavioral: Question-behaviour effect (for affective attitudes); Behavioral: Question-behaviour effect (negatively-worded attitudes)

Study type: Interventional

Funder types: Other

Identifiers

NCT02825862

REC1048b

Details and patient eligibility

About

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).

Enrollment: 999 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Agree to participate

Exclusion criteria

• Refuse to participate

Trial design

Primary purpose: Health Services Research

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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999 participants in 3 patient groups

Replication group

No Intervention group

Description:

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

Omit affective attitudes

Active Comparator group

Description:

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.

Treatment:

Behavioral: Question-behaviour effect (for affective attitudes)

Omit negatively-worded items

Active Comparator group

Description:

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.

Treatment:

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