PMID- 11239280 OWN - NLM STAT- MEDLINE DCOM- 20010412 LR - 20220409 IS - 0003-9993 (Print) IS - 0003-9993 (Linking) VI - 82 IP - 1 DP - 2001 Jan TI - The intra- and interrater reliability of the action research arm test: a practical test of upper extremity function in patients with stroke. PG - 14-9 AB - OBJECTIVES: To determine the intra- and interrater reliability of the Action Research Arm (ARA) test, to assess its ability to detect a minimal clinically important difference (MCID) of 5.7 points, and to identify less reliable test items. DESIGN: Intrarater reliability of the sum scores and of individual items was assessed by comparing (1) the ratings of the laboratory measurements of 20 patients with the ratings of the same measurements recorded on videotape by the original rater, and (2) the repeated ratings of videotaped measurements by the same rater. Interrater reliability was assessed by comparing the ratings of the videotaped measurements of 2 raters. The resulting limits of agreement were compared with the MCID. PATIENTS: Stratified sample, based on the intake ARA score, of 20 chronic stroke patients (median age, 62yr; median time since stroke onset, 3.6yr; mean intake ARA score, 29.2). MAIN OUTCOME MEASURES: Spearman's rank-order correlation coefficient (Spearman's rho); intraclass correlation coefficient (ICC); mean difference and limits of agreement, based on ARA sum scores; and weighted kappa, based on individual items. RESULTS: All intra- and interrater Spearman's rho and ICC values were higher than .98. The mean difference between ratings was highest for the interrater pair (.75; 95% confidence interval, .02-1.48), suggesting a small systematic difference between raters. Intrarater limits of agreement were -1.66 to 2.26; interrater limits of agreement were -2.35 to 3.85. Median weighted kappas exceeded .92. CONCLUSION: The high intra- and interrater reliability of the ARA test was confirmed, as was its ability to detect a clinically relevant difference of 5.7 points. FAU - Van der Lee, J H AU - Van der Lee JH AD - Department of Rehabilitation Medicine, University Hospital Vrije Universiteit, Amsterdam, The Netherlands. jh.vanderlee@azvu.nl FAU - De Groot, V AU - De Groot V FAU - Beckerman, H AU - Beckerman H FAU - Wagenaar, R C AU - Wagenaar RC FAU - Lankhorst, G J AU - Lankhorst GJ FAU - Bouter, L M AU - Bouter LM LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Arch Phys Med Rehabil JT - Archives of physical medicine and rehabilitation JID - 2985158R SB - IM MH - Aged MH - *Arm MH - *Disability Evaluation MH - Female MH - Humans MH - Male MH - Middle Aged MH - Paresis/*physiopathology/rehabilitation MH - Reproducibility of Results MH - Statistics, Nonparametric MH - Stroke/*physiopathology MH - Stroke Rehabilitation MH - Videotape Recording EDAT- 2001/03/10 10:00 MHDA- 2001/04/17 10:01 CRDT- 2001/03/10 10:00 PHST- 2001/03/10 10:00 [pubmed] PHST- 2001/04/17 10:01 [medline] PHST- 2001/03/10 10:00 [entrez] AID - S0003-9993(01)51301-5 [pii] AID - 10.1053/apmr.2001.18668 [doi] PST - ppublish SO - Arch Phys Med Rehabil. 2001 Jan;82(1):14-9. doi: 10.1053/apmr.2001.18668.