We evaluated SiD in a 2-phase study by using samples from the Amazon Mechanical Turk (MTurk) platform [9]. MTurk is a web-based crowdsourcing platform where individuals complete tasks in exchange for digital currency. Eligible participants were English-speaking, US-based, adult users of MTurk (aged ≥18 years) who self-identified as informal caregivers of someone with ADRD who was not living in a nursing home or another facility that provided 24-7 care and supervision. Potentially eligible participants had to choose the correct definition of dementia as a check of their caregiver identity and attention (ie, to determine whether they were paying attention) [10]. Each participant completed 2 additional attention checks while taking the survey. Participants viewed study information for informed consent and were compensated with US $4.00. This amount was in line with the compensation amounts for comparable MTurk tasks. MTurk participants’ identities were not known to the study team.

In phase 1, participants were randomized (1:1) to view either the intervention (SiD) or control (static, web-based Alzheimer’s Association materials [3]). Participants were blinded to the study arms and could navigate through the study websites for as long as they wanted and in whatever way they wanted. They were asked to choose 1 section (the firearm, driving, or home safety sections) that was the “most meaningful in [their lives] right now” as caregivers and answer related questions.

After exceeding the target recruitment size for the pilot randomized trial (phase 1), we adjusted the eligibility criteria to specify that the person with ADRD must have access to at least 1 firearm (phase 2). This change was made to allow for the collection of additional focused feedback on the firearm section, and all caregiver participants in phase 2 were directed to view the firearm section of the SiD website. The SiD website content was frozen during this study, and no changes were made until after this study was completed. This study was approved by the Colorado Multiple Institutional Review Board, which waived the need for written informed consent.

Web-based, self-administered questionnaires in Qualtrics (Qualtrics International Inc) were used to assess the characteristics of participants and the people with dementia for whom they provided care.

We assessed the feasibility of collecting data on key efficacy outcome measures from the Ottawa Decision Support Framework [11], which addresses decisional needs (eg, knowledge, conflicts, and personal values) that affect decisional quality (ie, the degree to which decisions align with values). The 10-item Preparation for Decision-Making Scale [12] uses Likert response options, and higher scores represent greater preparedness; we excluded the item on preparation for follow-up with a physician [12]. The Decision Self-Efficacy Scale [13] measures an individual’s self-confidence in their decision-making ability. The Stage of Decision-Making Scale uses a 6-point Likert scale and includes responses that range from “haven’t begun to think about the choices” to “have already made a decision and am unlikely to change my mind” [14]. Efficacy measures were administered after participants viewed SiD or the control; the Stage of Decision-Making Scale was also administered before participants viewed the study materials.

To analyze tool acceptability, we used the Ottawa Acceptability Scale [15] to assess the study materials’ balance in tone, the clarity of information, helpfulness, and the likelihood of participants recommending the study materials to others. Additional questions were used to assess tool usability and allowed for free-text feedback.

Quantitative survey data were analyzed by using descriptive statistics. Continuous variables were summarized with means and SDs (or with medians and quartiles when a group had a sample size of <10). Categorical variables were summarized with frequencies and percentages. Differences in measures between the control and SiD arms in phase 1 and between the phase 1 and phase 2 cohorts were tested with 2-sample two-tailed t tests for continuous variables and Fisher exact tests for categorical variables due to the small sample sizes in some groups. All phase 1 comparisons were conducted based on the intention-to-treat assignment to each study arm.

SiD represents the first publicly available decision aid that addresses firearm access among people with dementia [6]. This trial demonstrated the feasibility of recruiting caregivers through MTurk and collecting efficacy outcome data. In the randomized phase, the interactive aid—SiD—performed similarly to the static Alzheimer’s Association materials in terms of its effects on decision-making and decision self-efficacy. Users of both resources may be more knowledgeable in and supportive of decision-making than people who are not directed to a resource, and this could be tested in future work. The phase 2 results indicated that ADRD care partners were willing to engage with the decision aid, found it useful for making decisions, and would recommend the resource to others.

The Veterans Health Administration has created guidance memoranda for clinicians on when and how to counsel veterans with dementia (and their caregivers) about safe firearm practices [4]. Some ADRD organizations have coordinated with firearm retailers to provide temporary storage options for ADRD caregivers who may need assistance in moving firearms from their homes [17]. Although these organizations have provided general guidance, SiD represents a practical tool for supporting decision-making. It can be used as a stand-alone resource for care providers, although it might also be integrated into counseling provided by care providers in health care or aging service organizations [18].

Quantitative and qualitative feedback resulted in the refinement of SiD. To make resources more accessible, we added a downloadable summary in each section. We revised the language to normalize the idea that solutions can take time and effort to enact. Further improvements to website navigation and flow (ie, restructuring the website to clarify where certain content was located) were made via consultations with a web developer.

The limitations of this pilot study include the fact that participants were predominantly non-Hispanic, White individuals. Existing data indicate that firearm ownership and suicide are more common among White individuals than among other racial and ethnic groups [19], but more diverse samples could reveal differences among populations. SiD has now been translated into Spanish to allow for future testing and use among broader populations. Further, MTurk participants may be a more technologically savvy population, and this may have inflated our results on the acceptability of a web-based tool. Larger-scale studies that examine effective dissemination strategies for reaching diverse populations as well as the effect that SiD has on key outcomes, such as injuries and caregiver well-being, are current research foci.

Our pilot trial results suggest that SiD represents a practical, interactive tool that is usable and acceptable among ADRD caregivers. SiD seeks to frame critical decision points and present information in clear and digestible segments to make decisions more manageable and, consequently, more likely to be enacted [20]. Additional testing is needed to evaluate its effects on behavior changes and outcomes among both caregivers and people with dementia and to identify the best methods for disseminating SiD to diverse populations affected by ADRD.