Supplementary Material for: Use of a Supportive Kidney Care Video Decision Aid in Older Patients: A Randomized Controlled Trial

Background: There are few studies of patient-facing decision aids that include supportive kidney care as an option. We tested the efficacy of a video decision aid on knowledge of supportive kidney care among older patients with advanced CKD. Methods: Participants (age ≥ 65 years with advanced CKD) were randomized to receive verbal or video education. Primary outcome was knowledge of supportive kidney care (score range 0–3). Secondary outcomes included preference for supportive kidney care, and satisfaction and acceptability of the video. Results: Among all participants (n = 100), knowledge of supportive kidney care increased significantly after receiving education (p < 0.01); however, there was no difference between study arms (p = 0.68). There was no difference in preference for supportive kidney care between study arms (p = 0.49). In adjusted analyses, total health literacy score (aOR 1.08 [95% CI: 1.003–1.165]) and nephrologists’ answer of “No” to the Surprise Question (aOR 4.87 [95% CI: 1.22–19.43]) were associated with preference for supportive kidney care. Most felt comfortable watching the video (96%), felt the content was helpful (96%), and would recommend the video to others (96%). Conclusions: Among older patients with advanced CKD, we did not detect a significant difference between an educational verbal script and a video decision aid in improving knowledge of supportive kidney care or preferences. However, patients who received video education reported high satisfaction and acceptability ratings. Future research will determine the effectiveness of a supportive kidney care video decision aid on real-world patient outcomes. Trial Registration: NCT02698722 (ClinicalTrials.gov).