Plasma donation interest among men who have sex with men seeing either a co-developed intervention or "business-as-usual" control materials

Assessing a co-developed digital intervention supporting men who have sex with men in donating plasma: A randomized controlled trial and process evaluation

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN99980283

Enrollment

196

Registered

2025-07-24

Start date

2025-09-03

Completion date

Unknown

Last updated

2026-01-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Plasma donation among men who have sex with men Other

Interventions

After completing baseline outcome and process measures and demographics questions, participants will be randomized automatically within the online survey software in a 1:1 ratio to (a) the interventio

Eligibility

Sex/Gender

Male

Age

18 Years to 99 Years

Inclusion criteria

Inclusion criteria: 1. Validated member of Leger Marketing Inc's proprietary Opinion panel 2. Living anywhere in Canada, except for Quebec 3. English-speaking 4. 18 years of age or older 5. Identifying as a cisgender or transgender man 6. Willing and able to complete an online survey 7. Able to access a computer, phone, or tablet with access to the internet

Exclusion criteria

Exclusion criteria: 1. Members of the Leger Marketing Inc's proprietary Opinion panel who do not meet the inclusion criteria 2. Participants who, since completing the Leger profiling questionnaire, have shifted their self-identified gender to (a) cisgender woman, (b) trans woman, (c) gender creative or non-conforming person, (d) non-binary person, (e) none of the listed gender identity options, or (f) prefer not to answer as identified within the baseline survey

Design outcomes

Primary

Measure	Time frame
Intention to donate plasma in the upcoming two months measured using the average score of three self-report Likert scale items immediately after exposure to the intervention/control materials	—

Secondary

Measure	Time frame
Secondary outcome measure will be assessed at 2-month follow-up: 1. Plasma donation attempted in the past 2 months measured using a single dichotomous self-report item Exploratory outcome measure will be assessed at 2-month follow-up: 1. Intention to donate plasma in the upcoming two months measured using the average score of three self-report Likert scale items Process evaluation measures will be assessed immediately after exposure to the intervention/control materials: 1. Positive affect measured using the average score of seven self-report Likert scale items 2. Negative affect measured using the average score of eleven self-report Likert scale items 3. Knowledge measured using the average score of three self-report Likert scale items 4. Social influences measured using the average score of five self-report Likert scale items 5. Beliefs about Consequences measured using the average score of four self-report Likert scale items 6. Memory, Attention & Decision Processes measured using the average score of three self-report Likert scale items 7. Beliefs about Capabilities measured using the average score of three self-report Likert scale items	—

Measure

Time frame

Secondary outcome measure will be assessed at 2-month follow-up: 1. Plasma donation attempted in the past 2 months measured using a single dichotomous self-report item Exploratory outcome measure will be assessed at 2-month follow-up: 1. Intention to donate plasma in the upcoming two months measured using the average score of three self-report Likert scale items Process evaluation measures will be assessed immediately after exposure to the intervention/control materials: 1. Positive affect measured using the average score of seven self-report Likert scale items 2. Negative affect measured using the average score of eleven self-report Likert scale items 3. Knowledge measured using the average score of three self-report Likert scale items 4. Social influences measured using the average score of five self-report Likert scale items 5. Beliefs about Consequences measured using the average score of four self-report Likert scale items 6. Memory, Attention & Decision Processes measured using the average score of three self-report Likert scale items 7. Beliefs about Capabilities measured using the average score of three self-report Likert scale items

—

Countries

Canada

Contacts

Public ContactAmelia Palumbo

apalu035@uottawa.ca-

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026