Resource use data by patient report or hospital records: Do they agree?

Andrew D.M. Kennedy, Anne P. Leigh-Brown, David J. Torgerson, James Campbell, Adrian Grant

Research output: Contribution to journalArticlepeer-review


Background: Economic evaluations alongside clinical trials are becoming increasingly common. Cost data are often collected through the use of postal questionnaires; however, the accuracy of this method is uncertain. We compared postal questionnaires with hospital records for collecting data on physiotherapy service use.

Methods: As part of a randomised trial of orthopaedic medicine compared with orthopaedic surgery we collected physiotherapy use data on a group of patients from retrospective postal questionnaires and from hospital records.

Results: 315 patients were referred for physiotherapy. Hospital data on attendances was available for 30% ( n = 96), compared with 48% ( n = 150) of patients completing questionnaire data (95% Cl for difference = 10% to 24%); 19% ( n = 59) had data available from both sources. The two methods produced an intraclass correlation coefficient of 0.54 (95% Cl 0.31 to 0.70). However, the two methods produced significantly different estimates of resource use with patient self report recalling a mean of 1.3 extra visits (95% Cl 0.4 to 2.2) compared with hospital records.

Conclusions: Using questionnaires in this study produced data on a greater number of patients compared with examination of hospital records. However, the two data sources did differ in the quantity of physiotherapy used and this should be taken into account in any analysis.

Original languageEnglish
Article number2
Pages (from-to)-
Number of pages5
JournalBMC Health Services Research
Publication statusPublished - 17 Jan 2002

Bibliographical note

© 2002 Kennedy et al; licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original URL.



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