Minimal clinically important difference of the 6-Minute walk test and daily step count at 3 months following surgery for lumbar spinal stenosis.

ABSTRACT:

Purpose

This study aimed to estimate the minimal clinically important difference (MCID) in two objective measures of walking: 6-minute walk distance (6MWD) and mean daily step count in patients with lumbar spinal stenosis, three months post-surgery. Both anchor-based and distribution-based approaches were used to support result robustness and comparability.

Methods

97 patients (mean age 70 ± 8.3 years; 50 female) were recruited from three UK hospitals. 6MWD (metres) and mean daily step count (measured over 7 days with an accelerometer), and self-rated clinical questionnaires were assessed pre- and 12-weeks post-surgery. The anchor-based method used the Oswestry Disability Index (ODI) and the satisfaction subscale of the Zurich Claudication Questionnaire. Receiver-operating c

SUBMITTER: McIlroy S 

PROVIDER: S-EPMC12714853 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature