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27.08.2018 | Ausgabe 3/2019

Journal of Occupational Rehabilitation 3/2019

Trajectories of Physical Work Capacity in Early Symptomatic Osteoarthritis of Hip and Knee: Results from the Cohort Hip and Cohort Knee (CHECK) Study

Journal of Occupational Rehabilitation > Ausgabe 3/2019
H. J. Bieleman, R. Stewart, M. F. Reneman, W. M. van Ittersum, C. P. van der Schans, K. W. Drossaers-Bakker, F. G. J. Oosterveld
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Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s10926-018-9809-3) contains supplementary material, which is available to authorized users.


Purpose To evaluate the 5-year course of physical work capacity of participants with early symptomatic osteoarthritis (OA) of the hip and/or the knee; to identify trajectories and explore the relationship between trajectories and covariates. Methods In a prospective cohort study, physical work capacity was measured at baseline, using a test protocol (functional capacity evaluation) consisting of work-related physical activities. Participants were invited to participate in 1, 2 and 5 year follow-up measurements. Multilevel analysis and latent classes analysis were performed, in models with test performances as dependent variables and age, sex, work status, self-reported function (Western Ontario McMasters Arthritis Scale—WOMAC), body mass index (BMI) and time as independent variables. Multiple imputation was used to control for the influence of missing data. Results At baseline and after 1, 2 and 5 years there were 96, 64, 61 and 35 participants. Mean (SD) age at baseline was 56 (4.9) years, 84% were females. There was no statistically significant change in test performances (lifting low and high, carrying, static overhead work, repetitive bending, repetitive rotations) between the 4 measurements. Male sex, younger age and better self-reported function were statistically significant (p < 0.05) determinants of higher performance on most of the tests; having a paid job, BMI and progression of time were not. Three trajectories were identified: ‘weak giving way’, ‘stable and able’, and ‘strong with decline’. Discussion In subgroups of participants with early symptomatic OA, determined by age, sex and self-reported function, physical work capacity seems to be a stable characteristic over 5 years.

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Supplementary material Table A01 (DOCX 36 KB)
Supplementary material Tables A02 and A03 (XLSX 27 KB)
Supplementary material Table 4 (DOCX 14 KB)
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