Equipercentile equating of scores from common patient-reported outcome measures of physical function in patients with cancer
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Equipercentile equating of scores from common patient-reported outcome measures of physical function in patients with cancer. / Rothmund, Maria; Pilz, Micha J; Schlosser, Lisa; Arraras, Juan I; Groenvold, Mogens; Holzner, Bernhard; van Leeuwen, Marieke; Petersen, Morten Aa; Schmidt, Heike; Young, Teresa; Rose, Matthias; Cella, David; Giesinger, Johannes M; EORTC Quality of Life Group.
I: Journal of Clinical Epidemiology, Bind 165, 111203, 2024.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Equipercentile equating of scores from common patient-reported outcome measures of physical function in patients with cancer
AU - Rothmund, Maria
AU - Pilz, Micha J
AU - Schlosser, Lisa
AU - Arraras, Juan I
AU - Groenvold, Mogens
AU - Holzner, Bernhard
AU - van Leeuwen, Marieke
AU - Petersen, Morten Aa
AU - Schmidt, Heike
AU - Young, Teresa
AU - Rose, Matthias
AU - Cella, David
AU - Giesinger, Johannes M
AU - EORTC Quality of Life Group
N1 - Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.
PY - 2024
Y1 - 2024
N2 - OBJECTIVE: To provide equipercentile equating of physical function (PF) scores from frequently used PROMs in cancer patients to facilitate data pooling and comparisons.STUDY DESIGN AND SETTING: Adult cancer patients from five European countries completed the EORTC CAT Core, EORTC QLQ-C30, FACT-G, SF-36, and the PROMIS Physical Function 20a short form. The R package "equate" was used to establish conversion tables of PF scores on those measures with a bivariate rank correlation of at least 0.75.RESULTS: In total, 953 patients with cancer (mean age 58.9 years, 54.7% men) participated. Bivariate rank correlations between PF scores from the EORTC CAT Core, EORTC QLQ-C30, SF-36, and PROMIS were all above 0.85, but below 0.69 for the FACT-G. Conversion tables were established for all measures but the FACT-G. These tables indicate which score from one PROM best matches the score from another PROM and provide standard errors of converted scores.CONCLUSION: Our analysis indicates that linking of PF scores from both EORTC measures (CAT and QLQ-C30) with PROMIS and SF-36 is possible whereas the physical domain of the FACT-G seems to be different. The established conversion tables may be used for comparing results or pooling data from clinical studies using different PROMs.
AB - OBJECTIVE: To provide equipercentile equating of physical function (PF) scores from frequently used PROMs in cancer patients to facilitate data pooling and comparisons.STUDY DESIGN AND SETTING: Adult cancer patients from five European countries completed the EORTC CAT Core, EORTC QLQ-C30, FACT-G, SF-36, and the PROMIS Physical Function 20a short form. The R package "equate" was used to establish conversion tables of PF scores on those measures with a bivariate rank correlation of at least 0.75.RESULTS: In total, 953 patients with cancer (mean age 58.9 years, 54.7% men) participated. Bivariate rank correlations between PF scores from the EORTC CAT Core, EORTC QLQ-C30, SF-36, and PROMIS were all above 0.85, but below 0.69 for the FACT-G. Conversion tables were established for all measures but the FACT-G. These tables indicate which score from one PROM best matches the score from another PROM and provide standard errors of converted scores.CONCLUSION: Our analysis indicates that linking of PF scores from both EORTC measures (CAT and QLQ-C30) with PROMIS and SF-36 is possible whereas the physical domain of the FACT-G seems to be different. The established conversion tables may be used for comparing results or pooling data from clinical studies using different PROMs.
U2 - 10.1016/j.jclinepi.2023.10.019
DO - 10.1016/j.jclinepi.2023.10.019
M3 - Journal article
C2 - 37918641
VL - 165
JO - Journal of Clinical Epidemiology
JF - Journal of Clinical Epidemiology
SN - 0895-4356
M1 - 111203
ER -
ID: 374128044