153.
GENERATING ITEM-CONTENT FOR CONDITION-SPECIFIC
QUESTIONNAIRES: Face Validity in Patient-Related Outcome Score
Jonathan Comins, Michael Krogsgaard, John Brodersen
Section for Sportstraumatology M51, Bispebjerg University Hospital, and
Research Unit and Section of University of Copenhagen; Section for
Sportstraumatology M51, Bispebjerg University Hospital , Bispebjerg;
Research Unit and Section of General Practice, Department of Public Health,
University of Copenhagen
Background:
Patient reported outcome (PRO) questionnaires are increasingly
used to measure the effect of surgery in patients with knee pathology. PRO’s
commonly used to assess outcome can be generic, anatomically-specific, or
pathology-specific. Most PRO´s have been created on the basis of clinician-
based consensus and are not patient-centered. Items (questions plus their
response options) in PROs can be generated by clinicians or through patient
interviews. Items used by clinicians possess face validity as defined by Mosier.
Purpose / Aim of Study:
The objective of this study was to find existing PRO
items with potentially relevant content for patients with mechanically induced
knee pathology (i.e., knee trauma).
Materials and Methods:
An exhaustive literature search was conducted for
PRO questionnaires in English, German, and Scandinavian languages used to
assess outcome in patients with knee pathology. The items from the collected
PROs were assessed for content redundancy and item reduction was carried
out to isolate items of unique content. These items were grouped into one of
the components of the ICF classification system.
Findings / Results:
Thirty-one PRO’s used to assess patients with knee
problems were identified, yielding a total of 539 items. Approximately seventy
percent of these items consisted of redundant content matter. The items were
reduced to a pool of 157 items of unique content distributed across four ICF
domains. These items will be presented.
Conclusions:
The identified items can be used to build condition-specific PRO
constructs for patients with different types of knee pathology.
