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Minimally important change was estimated for the Manchester-Oxford Foot Questionnaire after foot/ankle surgery.

Abstract：

OBJECTIVES:To ascertain the smallest amounts of change for the three Manchester-Oxford Foot Questionnaire (MOXFQ) domains that are likely to be clinically meaningful and beyond measurement error for conditions affecting the foot/ankle. Estimates were compared with those from the Short-Form 36 (SF-36). STUDY DESIGN AND SETTING:A prospective observational study of 671 consecutive patients undergoing foot or ankle surgery at an orthopedic hospital. Before and 9 months after surgery, patients completed the MOXFQ and SF-36; transition items (anchor) asked about perceived changes in foot/ankle pain or problems since the surgery. RESULTS:Four hundred ninety-one patients completed pre- and postoperative questionnaires. Anchor-based minimal clinically important change (MCIC) values were ~13 points for each of the MOXFQ Walking/standing (W/S), Pain, and Social Interaction (S-I) domains [and greater than the standard error of measurement (SEM)]. MCIC values for all SF-36 domains fell within the SEM. Between-group MCIDs for the MOXFQ were W/S, 16.2; Pain, 9.9; S-I, 9.3. Distribution-based minimal detectable change (MDC90) values for the MOXFQ were ~11, ~12, and ~16 score points for the W/S, Pain, and S-I scales, respectively. CONCLUSION:This article provides information for aiding the interpretability of MOXFQ outcomes data and for planning future studies. The SF-36 is not recommended as a primary outcome for foot/ankle surgery.

journal_name

J Clin Epidemiol

journal_title

Journal of clinical epidemiology

authors

Dawson J,Boller I,Doll H,Lavis G,Sharp R,Cooke P,Jenkinson C

doi

10.1016/j.jclinepi.2014.01.003

subject

Has Abstract

pub_date

2014-06-01 00:00:00

pages

697-705

issue

6

eissn

0895-4356

issn

1878-5921

pii

S0895-4356(14)00022-5

journal_volume

67

pub_type

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