A Survey of Attitudes of Experienced Blood Donors
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT03102385|
Recruitment Status : Completed
First Posted : April 5, 2017
Last Update Posted : February 25, 2019
|Condition or disease||Intervention/treatment||Phase|
|Blood Donors||Behavioral: Motivational Interview Behavioral: Knowledge Interview||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||1177 participants|
|Intervention Model:||Parallel Assignment|
|Intervention Model Description:||Participants will be randomly assigned to either (1) complete an on-line motivational interview about their blood donation experience, or (2) complete an on-line knowledge interview about blood donation.|
|Masking Description:||All participants were informed that they would complete an on-line interview regarding blood donation. They were not be told which of the two interviews they were completing.|
|Official Title:||A Survey of Attitudes of Experienced Blood Donors|
|Actual Study Start Date :||April 3, 2017|
|Actual Primary Completion Date :||November 1, 2018|
|Actual Study Completion Date :||November 1, 2018|
Experimental: Motivational Interview
Complete an on-line motivational interview regarding participants' blood donation experience.
Behavioral: Motivational Interview
A web-based computer-tailored intervention that includes open-ended questions, reflective responses, affirmations, and summarizing, as well as informing and advising. Specific topics include 1) individual motivations for giving, 2) the relationship between past donation behavior and the individual's personal goals/values, 3) donation importance and confidence rulers, 4) addressing donor concerns, and 5) summarizing.
Placebo Comparator: Knowledge Interview
Complete an on-line interview regarding participants' general knowledge about blood donation.
Behavioral: Knowledge Interview
A web-based interview that includes open-ended questions regarding blood donation knowledge.
- Blood donation attempts [ Time Frame: 60 weeks after index donation ]The number of blood donation attempts since their study participation will be obtained from the participants' donor records.
- Donation Intention [ Time Frame: on average 1 week after index donation; on average 2 days after interview; on average 7 weeks after interview ]Intent to donate blood within the next 8 weeks will be assessed using three questions on a 7-point Likert-type scale, from 1 (disagree) to 7 (agree): I plan to donate blood in the next 8 weeks., How likely is it that you will donate blood in the next 8 weeks? and I will donate blood in the next 8 weeks. Total scores on the scale range from 3 to 21, with higher scores indicating greater intention to donate.
- Donation Attitude [ Time Frame: on average 1 week after index donation; on average 2 days after interview; on average 7 weeks after interview ]Attitudes toward blood donation will be assessed using a 6-item measure where individuals are asked to rate how donating blood in the next 8 weeks would seem using a 7-item Likert-type scale. The scale distinguishes between cognitive attitudes (evaluative judgments: useful versus useless, pointless versus worthwhile, the wrong thing to do versus the right thing to do) and affective attitudes (emotional reactions: unpleasant versus pleasant, unenjoyable versus enjoyable, frightening versus not frightening). Total scores on the scale range from 6 to 42, with higher scores reflecting more positive attitudes toward blood donation.
- Donation Perceived Behavioral Control [ Time Frame: on average 1 week after index donation; on average 2 days after interview; on average 7 weeks after interview ]Individuals' perception of control over their ability to donate blood will be assessed using a 6-item measure that assesses two components of perceived behavioral control: self-efficacy (three items) and controllability (three items). Items on the self-efficacy sub-scale ask about how confident the participant is in their ability to donate blood in the next 8 weeks, while the controllability sub-scale assesses how much control participants feel they have over whether or not they donate blood. Participants are asked to rate each item on a 7-point Likert-type scale. Total scores on the scale range from 6 to 42, with higher scores reflecting greater perception of control over ones ability to donate blood.
- Donation Subjective Norms [ Time Frame: on average 1 week after index donation; on average 2 days after interview; on average 7 weeks after interview ]Individuals' perception about subjective norms will be assessed using a six item, 7-point Likert-type scale, with anchors at 1 (disagree/unlikely) and 7 (agree/likely). Total scores on the scale range from 6 to 42. The measure assesses both descriptive norms (perceived behavior of others) and injunctive norms (what an individual believes others want from him/her).
- Blood Donor Identity [ Time Frame: on average 1 week after index donation; on average 2 days after interview; on average 7 weeks after interview ]Blood Donor Identity will be measured using an 18-item scale that examines an individual's motivation to donate on the six motivational factors proposed by Self Determination Theory: amotivation, external regulation, introjected regulation, identified regulation, integrated regulation, and intrinsic regulation. Participants are asked to rate their agreement with each item on a 7-point Likert-type scale, with individual item scores ranging from 1 (not at all true) to 7 (very true). A composite score for the total scale is calculated by combining the six subscale scores using the weighting of -3, -2, -1, +1, +2, +3 for the amotivation, external regulation, introjected regulation, identified regulation, integrated regulation, and intrinsic regulation subscales, respectively, in order to produce a single Relative Autonomy Index score.
- Blood Donation Anxiety [ Time Frame: on average 1 week after index donation; on average 2 days after interview; on average 7 weeks after interview ]Anxiety will be assessed using the Blood Donor Anxiety Scale, a six-item scale that assesses for both the presence (3 items) and absence (3 items) of anxiety. Participants rate their agreement on how relaxed, content, pleasant, tense, nervous and jittery they would feel if they donated blood on a 4-point scale, with anchors at 1 (not at all) and 4 (very much). Composite scores on the scale range from 3 to 12, with higher scores on the presence subscale reflecting more anxiety, and higher scores on the absence subscale reflecting less anxiety about a future donation.
- Blood Donor Ambivalence [ Time Frame: on average 1 week after index donation; on average 2 days after interview; on average 7 weeks after interview ]The 6-item ambivalence scale asks participants to rate how true a statement is for them on a 7-point scale (1=Not at all true to 7=Very true). Separate subscale scores are calculated for commitment and indecision (scores ranging from 3 to 21 for each subscale).
- Psychological Need Support [ Time Frame: on average 2 days after interview ]To assess whether the Motivational Interview intervention supported the basic psychological needs of autonomy, competence, and relatedness, a 9-item Likert-type scale will be utilized (3 items per psychological need, anchors at 1 = Not at All and 7 = Extremely).
- Treatment Evaluation [ Time Frame: on average 2 days after interview ]Participants will be asked a series of questions regarding their experience during the interview.
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): NCT03102385
|United States, Ohio|
|Athens, Ohio, United States, 45701|
|Principal Investigator:||Christopher R France, PhD||Ohio University|