Abstract:
:This study demonstrates the quantitative characteristics of the first patient-reported outcome (PRO) tool developed for patients with nontransfusion-dependent β-thalassemia (NTDT), the NTDT-PRO© . A multicenter validation study was performed over 24 weeks, involving 48 patients from Italy, Lebanon, Greece, and Thailand. Most patients were female (68.8%), with a median age of 34.5 years (range, 18-52); 66.7% were diagnosed with β-thalassemia intermedia, and median time since diagnosis was 22 years (range, 0-43). The NTDT-PRO comprises 6 items across 2 domains (Tiredness/Weakness and Shortness of Breath [SoB]), and was valid and reliable, with good consistency. At baseline, most patients reported symptoms as present via the NTDT-PRO, and were highly compliant, ≥90% completing the NTDT-PRO tool. In a pairwise correlation analysis, all items were positively correlated. Correlations between NTDT-PRO and existing tools-36-Item Short Form Health Survey version 2 (SF-36v2) and Functional Assessment of Cancer Therapy-Anemia (FACT-An)-were assessed at weeks 1, 3, and 12; robust correlations were seen between SoB and SF-36v2-Vitality (rs = -0.53), and between SoB and Fact-An-Fatigue Experience (rs = -0.66) at week 1. Internal consistency was high for both Tiredness/Weakness (Cronbach alpha, 0.91) and SoB (Spearman-Brown coefficient, 0.78); intraclass correlation coefficients were high (Tiredness/Weakness, 0.88 and 0.97; SoB, 0.92 and 0.98), demonstrating stability. Further studies are required to fully support the validity of this tool, this study demonstrated the usefulness of the NTDT-PRO in the clinical setting and for longitudinal clinical research, particularly in trials where patient health-related quality of life is expected to change.
journal_name
Am J Hematoljournal_title
American journal of hematologyauthors
Taher A,Cappellini MD,Viprakasit V,Sutcharitchan P,Mahmoud D,Laadem A,Khan A,Gwaltney C,Harding G,Attie K,Zhang X,Zou J,Pariseau J,Henry Hu X,Kattamis Adoi
10.1002/ajh.25344subject
Has Abstractpub_date
2019-02-01 00:00:00pages
177-183issue
2eissn
0361-8609issn
1096-8652journal_volume
94pub_type
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