SENSE-Brain Health Pro for Older Adults With Sensory Loss

Change in Knowledge About Alzheimer's Disease Assessed Using the Alzheimer's Disease Knowledge Scale (ADKS)

Knowledge about Alzheimer's disease will be assessed using the Alzheimer's Disease Knowledge Scale (ADKS). The ADKS is a 30-item questionnaire with true/false response options that assesses knowledge about Alzheimer's disease across several domains. Each correct response receives one point, producing a total score ranging from 0 to 30. Higher scores indicate greater knowledge about Alzheimer's disease. Change in ADKS total score from baseline to Month 6 will be evaluated.

Change in Self-Efficacy Assessed Using the General Self-Efficacy Scale (GSE)

Self-efficacy will be assessed using the General Self-Efficacy Scale (GSE), a 10-item questionnaire measuring perceived ability to cope with difficult situations and achieve goals. Each item is rated on a 4-point scale. Item scores are summed to produce a total score ranging from 10 to 40, with higher scores indicating greater perceived self-efficacy. Change in GSE total score from baseline to Month 3 and Month 6 will be evaluated.

Usability of Brain Health Pro Assessed Using the Adapted System Usability Scale (SUS)

Usability will be assessed using the System Usability Scale (SUS), adapted for SENSE-Brain Health Pro. The adapted questionnaire includes items assessing frequency of website use and perceived usability, including ease of use, navigation, complexity, consistency, confidence, need for technical assistance, and ease of learning. Usability items are rated on a 5-point scale from strongly disagree to strongly agree. Additional study-specific items assess accessibility and are reported separately as an accessibility outcome.

Acceptability of Brain Health Pro Assessed Using the Adapted Technology Acceptance Model (TAM) Questionnaire

Acceptability will be assessed using a 29-item Technology Acceptance Model (TAM) Questionnaire adapted for SENSE-Brain Health Pro. The questionnaire includes 26 structured items assessing perceived usefulness, communication, everyday benefits, website experience, and accessibility experience. Structured items are rated on a 7-point scale from strongly disagree to strongly agree. Three open-ended questions assess helpful accessibility features, suggested accessibility improvements, and barriers experienced while using Brain Health Pro.

Perceived Dementia Risk and Risk-Reduction Behaviours Assessed Using PRISM-PC

Participants' perceptions of dementia risk and engagement in dementia risk-reduction behaviours will be assessed using Sections B and D of the Perceptions Regarding Investigational Screening for Memory in Primary Care (PRISM-PC) questionnaire.

Accessibility Accommodations and Experiences With Brain Health Pro

Accessibility accommodations will be assessed using the SENSE-BHPro Accessibility Accommodations Questionnaire. The questionnaire documents vision-related accommodations, hearing-related accommodations, computer accessibility settings, assistance received from others, and participants' perceived usefulness of the accommodations used. Additional comments about accessibility accommodations may also be provided.

Barriers and Facilitators to Using Brain Health Pro

Barriers and facilitators will be assessed using the SENSE-BHPro Accessibility Barriers and Facilitators Questionnaire. Structured items assess ease of access and navigation, readability, audio accessibility, visual presentation, compatibility with assistive technologies, specific barriers and facilitators, and overall satisfaction. Agreement items use a 5-point scale from strongly disagree to strongly agree. Open-ended questions ask participants to describe their main accessibility barrier, what helped them most, and recommended improvements.