Cohort Profile: The Danish Occupational Medicine Cohort—a nationwide cohort of patients with work-related disease.

Furthermore, as the cohort only includes register data, other important information from patient records such as data on clinical examination findings (aside from diagnosis), duration and severity of symptoms, functional limitations and whether or not the presented symptoms were assessed to be causally related to working conditions, are not available at the moment. Key Messages The Danish Occupational Medicine Cohort was established to conduct long-term follow-up for large groups of patients with work-related disease. The administrative data comprise identification of the patient (the unique personal identification number - CPR-number), the municipality of the patient, identification (ID) of the hospital ward, date and time of activity. However, in part due to large organizational merges that had taken place during 2000-18 and in part due to information back in time not always being available from the departments (due to, for example, closure of old patient IT systems), we only obtained information on 91 354 patients corresponding to 75% of the requested years (seven departments over 19 years). [Extracted from the article]