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01.12.2014 | Ausgabe 4/2014

Journal of Occupational Rehabilitation 4/2014

A Cluster Randomized Clinical Trial Comparing Functional Capacity Evaluation and Functional Interviewing as Components of Occupational Rehabilitation Programs

Journal of Occupational Rehabilitation > Ausgabe 4/2014
Douglas P. Gross, Alexander K. Asante, Maxi Miciak, Michele C. Battié, Linda J. Carroll, Ambrose Sun, Marti Mikalsky, Rene Huellstrung, Riikka Niemeläinen
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Electronic supplementary material

The online version of this article (doi:10.​1007/​s10926-013-9491-4) contains supplementary material, which is available to authorized users.


Purpose Functional capacity evaluations (FCE) are used to identify work abilities and are commonly integrated into rehabilitation programs. We studied whether integrating FCE into rehabilitation leads to better outcomes for injured workers. Methods A cluster randomised controlled trial was conducted at a workers’ compensation rehabilitation facility (registration ISRCTN61284905). Clinicians were randomised into 2 groups: 1 group used FCE while another conducted semi-structured functional interviews. Outcomes included recommendations following assessment, rehabilitation program outcomes including functional work levels and pain intensity, as well as compensation outcomes at 1, 3, and 6 months after assessment. Analysis included Mann–Whitney U, Chi square and t tests. Results Subjects included 225 claimants of whom 105 were tested with FCE. Subjects were predominantly employed (84 %) males (63 %) with sub-acute musculoskeletal conditions (median duration 67 days). Claimants undergoing FCE had ~15 % higher average functional work levels recommended at time of assessment (Mann–Whitney U = 4,391.0, p < 0.001) but differences at other follow-up times were smaller (0–8 %), in favour of functional interviewing, and not statistically significant. Clinically important improvement during rehabilitation in functional work level (0.9/4, SRM = 0.94), pain intensity (2.0/10, SRM = 0.88) and self-reported disability (21.8/100, SRM = 1.45) were only observed in those undergoing the functional interview. Conclusions Performance-based FCE integrated into occupational rehabilitation appears to lead to higher baseline functional work levels compared to a semi-structured functional interview, but not improved RTW rates or functional work levels at follow-up. Functional interviewing has potential for efficiency gains and higher likelihood of clinically important improvement following rehabilitation, however further research is needed.

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