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During the congress, E-Posters will be accessible to all participants on the congress website 24/7, as well as in the E-poster stations in the congress center.
Preparing your E-Poster
Please review the E-Poster format requirements carefully when preparing your E-Poster. Should your E-Poster not meet the mentioned requirements, it may not be displayed as described above.
E-Poster Submission Deadline
Please prepare and upload your E-Poster no later than March 14, 2026 11.59PM CET. After this date, you will no longer be able to prepare and upload your E-poster and it will not be displayed and accessible on the congress website.
Please follow the instructions below to input your abstract title.
Abstract titles should be brief and reflect the content of the abstract.
Patient-reported outcome measures (PROMs) provide insight into how dialysis patients experience their health beyond laboratory or clinical indicators. The Patient-Reported Outcomes Measurement Information System-29 (PROMIS-29) is a widely used questionnaire assessing health-related quality of life (HrQOL) domains including physical function, fatigue, pain interference, depression, anxiety, social participation, sleep disturbance and pain intensity. However, data on its performance in Turkish-speaking populations remain limited. As part of the multicenter DOPRO study on HrQOL in Turkish dialysis patients, we evaluated the reliability and validity of the Turkish PROMIS-29 and compared it to the SF-36, a traditional HrQOL instrument frequently used in nephrology.
Participants on maintenance hemodialysis completed the PROMIS-29 electronically at two time points separated by at least 7 days. Psychometric testing included analyses of internal consistency (how well items within a domain measure the same concept), item-total correlations (how strongly each question contributes to its overall domain) and test-retest reliability (stability of scores over time). Validity was examined through inter-item correlation patterns and through correlations between PROMIS-29 domains and corresponding SF-36 domains.
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 (α ≥ 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.
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 well-being.
