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Updated: Aug 6, 2026

Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools
Published on: June 20, 2020
Mapping the EORTC item library to the World Health Organization international classification of functioning,
Hayat Hamzeh1, Shaista Meer2, Maria Rothmund-Grenier3
1Leeds Institute for Medical Research, University of Leeds, St James's University Hospital, Level 5, Clinical Sciences Building, Beckett Street, Leeds, LS9 7TF, UK. h.h.hamzeh@leeds.ac.uk.
Purpose:
The European Organisation for Research and Treatment of Cancer (EORTC) questionnaires are some of the most widely used patient-reported outcome measures (PROMs) for health-related quality of life assessment in oncology. The EORTC Item Library is an online platform comprising all EORTC PROMs that enables the creation of customised questionnaires (item lists). To characterise and better understand the breadth of functioning, disability and health coverage within the EORTC Item Library, this study aimed to link and analyse its content using the International Classification of Functioning, Disability and Health (ICF).
Methods:
A team of reviewers applied the most recent ICF linking rules to map the items currently included in the EORTC Item Library. Descriptive analysis was used to summarise the content covered in ICF categories and concepts coded as not covered or not definable.
Results:
The 1076 EORTC items covered 1860 concepts overall, with most (n = 1641, 88.2%) linked to the ICF. Concepts were linked to the majority of ICF chapters (n = 28/30, 93.3%), covering 60.9% (168/276) of all second-level ICF categories. The components of 'b-Body functions' and 'd-Activities and participation' had the highest coverage, with concepts linked to 80.0% (64/80) and 68.5% (63/92) of all second-level categories respectively.
Conclusions:
The EORTC Item Library provides broad coverage of functioning, disability and health within the ICF. Using the ICF to describe its content can inform the selection of EORTC items and PROMs and facilitate standardised comparison across measures and contexts, supporting the use and interpretation of EORTC measures in research and clinical practice.
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