The Cohort Hip & Cohort Knee (CHECK) is a population-based observational multicenter cohort study of 1002 individuals with early symptomatic osteoarthritis (OA) of knee and/or hip in the Netherlands. The participants were followed for 10 years. The study evaluated clinical, radiographic and biochemical variables in order to establish the course, prognosis and underlying mechanisms of early symptomatic osteoarthritis. The Dutch Artritis Foundation initiated and funded this inception cohort.
The data are stored in four separate datasets. See the overview below. See ‘Relations’ for a direct link to each dataset.
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CHECK (Cohort Hip & Cohort Knee) data of baseline (T0):
This dataset covers the data collection of baseline (T0) without the variable 'Subject identification number'. Also X-rays of hips and knees of baseline are available. More information on the variables can be found in the documentation.
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CHECK (Cohort Hip & Cohort Knee) data of baseline to 5 years follow-up:
This dataset covers the data collection from baseline to 5 years follow-up: T0, T1, T2, T3, T4 and T5. All data files include the variable 'Subject identification number’. Also X-rays of baseline, 2 and 5 year follow-up visits are available.
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CHECK (Cohort Hip & Cohort Knee) data of baseline and 6 to 8 years follow-up:
This dataset covers the data collection of baseline and 6 to 8 years follow-up: T0, T6, T7 and T8. All data files include the variable 'Subject identification number'. Also X-rays of hips, knees, hands and spine of T8 are available. The X-ray data are not included in the dataset, they are stored outside of EASY. More information on the variables can be found in the documentation.
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CHECK (Cohort Hip & Cohort Knee) data of baseline and 9- 10 years follow-up
This dataset covers the data collection of baseline and 9-10 years follow-up: T9 and T10 All data files include the variable 'Subject identification number.’ Also X-rays of hips and knees of baseline and 10 year follow-up visit are available. The X-ray data are not included in the dataset, they are stored outside of EASY. More information on the variables can be found in the documentation..
The first dataset is directly available for registered users. The other datasets are available when permission has been granted by CHECK. You can send in a permission request for each dataset via EASY via the tab ’Data files’ after logging in.
Please note: the X-ray data are not included in the datasets, they are stored outside of EASY. Please consult the X-ray_data_request.pdf file to get more information on how to obtain this data.
