through correlations between PROMIS-29 domains and corresponding SF-36 domains. Results: A total of 177 adults on maintenance hemodialysis participated (mean age = 55. 5 13. 4 years; 87. 5% in-center, 12. 5% home hemodialysis). All PROMIS-29 domains demonstrated good internal consistency (0. 70) and acceptable test-retest reliability (ICC = 0. 59-0. 83). Items within each domain were well aligned, confirming that they consistently measured the intended health aspect. Inter-item correlations showed clear clustering of related questions, supporting the conceptual structure of the tool. Ceiling and floor effects were minimal (< 10% per domain). Most correlations between PROMIS-29 and SF-36 domains were moderate to strong (r = 0. 18-0. 71), indicating that both instruments capture comparable HrQOL dimensions (see Table below). PROMIS-29 scores appeared slightly more responsive to psychosocial factors such as self-efficacy than the SF-36, suggesting that it may better reflect patient-perceived health differences relevant to clinical care. Conclusion: The Turkish PROMIS-29 showed strong measurement performance in dialysis patients, reliably capturing both physical and mental aspects of HrQOL. Its close alignment with SF-36 results, combined with simpler scoring and broader domain coverage, supports its use as a valid and efficient alternative in nephrology practice and research to better understand patients' daily functioning and wellbeing. I have potential conflict of interest to disclose. I am an employee of Fresenius Medical Care. I did not use generative AI and AI-assisted technologies in the writing process.
Putra et al. (Wed,) studied this question.