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Assessment of non-response in quality control of nasal septal surgery

Published online by Cambridge University Press:  28 February 2019

R Haye*
Affiliation:
Department of Oto-Rhino-Laryngology, Lovisenberg Diaconal Hospital, Oslo, Norway Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Norway
M T Egeland
Affiliation:
Department of Quality, Lovisenberg Diaconal Hospital, Oslo, Norway
L K Døsen
Affiliation:
Department of Oto-Rhino-Laryngology, Lovisenberg Diaconal Hospital, Oslo, Norway
C Gay
Affiliation:
Department of Quality, Lovisenberg Diaconal Hospital, Oslo, Norway
M TarAngen
Affiliation:
Department of Quality, Lovisenberg Diaconal Hospital, Oslo, Norway
O Shiryaeva
Affiliation:
Department of Quality, Lovisenberg Diaconal Hospital, Oslo, Norway
*
Author for correspondence: Dr Rolf Haye, Department of Oto-Rhino-Laryngology, Lovisenberg Diaconal Hospital, Lovisenberggata 17, 0456 Oslo, Norway E-mail: rolf.haye@medisin.uio.no Fax: +00 47 2322 5646

Abstract

Objective

This study evaluated the effect of mail non-response on the validity of the results of nasal septal surgery.

Method

Six months post-operatively, questionnaires with both prospective and retrospective ratings were mailed to patients. Patients who did not respond (non-responders) were contacted by telephone. This study compared two cohorts of patients using different interviewers (a nurse and a surgeon). Cohort one consisted of 182 patients (with 67 per cent mail response), and cohort two consisted of 454 patients (with 64.8 per cent mail response).

Results

In both cohorts, the improvement in obstruction scores was significantly better among mail responders than among non-responders (telephone interviewees) using prospective ratings, but worse using retrospective ratings.

Conclusion

Mail responders had better improvement in nasal obstruction after septoplasty than non-responders. Therefore, low response rates may cause an overestimation of the results. The retrospective ratings obtained through telephone interviews are less reliable because they are influenced by memory and the patients’ tendency to give socially acceptable answers.

Information

Type
Main Articles
Copyright
Copyright © JLO (1984) Limited, 2019 

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