Smallest real difference of 2 instrumental activities of daily living measures in patients with chronic stroke
Journal
Archives of Physical Medicine and Rehabilitation
Journal Volume
93
Journal Issue
6
Pages
1097-1100
Date Issued
2012
Author(s)
Abstract
Objective: To estimate the smallest real difference (SRD) values of 2 instrumental activities of daily living measures (the Nottingham Extended Activities of Daily Living [NEADL] and the Frenchay Activities Index [FAI]) in patients with chronic stroke. Design: Test-retest reliability study. Setting: Physical rehabilitation units of 5 hospitals. Participants: Chronic stroke patients (N=52; 37 men, 15 women) who were discharged from the hospital for more than 6 months. Interventions: Not applicable. Main Outcome Measures: Both measures were administered twice about 2 weeks apart to participants. The SRD was calculated on the basis of standard error of measurement: SRD = 1.96 × √2 × Standard error of measurement. SRD% (the value of SRD divided by total score of a measure) was used to compare measurement errors across both measures. Reproducibility between successive measurements of the measures was investigated with intraclass correlation coefficients (ICCs). Results: The SRD (SRD%) values of the NEADL and the FAI were 12.0 (21.1%) and 6.7 (14.9%), respectively. Test-retest reproducibility of both measures was high (ICC: NEADL=.89, FAI=.89). Conclusions: Because of substantial SRD values of the NEADL and the FAI, prospective users should be cautious in using both measures to detect real change for a single subject. ? 2012 American Congress of Rehabilitation Medicine.
SDGs
Other Subjects
adult; article; chronic disease; controlled study; correlation coefficient; daily life activity; female; Frenchay activities index; hospital discharge; human; instrumental variable analysis; major clinical study; male; measurement error; Nottingham extended activities of daily living scale; reproducibility; stroke; stroke patient; test retest reliability; Activities of Daily Living; Aged; Chronic Disease; Cohort Studies; Disability Evaluation; Female; Follow-Up Studies; Humans; Male; Middle Aged; Physical Therapy Modalities; Rehabilitation Centers; Reproducibility of Results; Stroke; Taiwan; Treatment Outcome
Type
journal article