• Jürgen Linder, Gunilla Brodda Jansen, Kristina Schüldt Ekholm, and Jan Ekholm.
• Department of Clinical Neuroscience, Karolinska Institutet, Solna, Sweden. jurgen.linder@ki.se.
• J Rehabil Med. 2014 Sep 1;46(8):798-805.

ObjectiveTo describe the frequency of reported sleeping, depression and pain problems, the severity of these problems and the degree of self-estimated difficulties in mental functions and activities in relation to the sleep disturbance and pain category group in patients on long-term sick-leave.DesignCross-sectional study.PatientsA total of 1206 patients experiencing difficulty in resuming work.MethodsPatient examinations by specialists in psychiatry, orthopaedic surgery and rehabilitation medicine. Validated questionnaires, including status regarding depression, sleep, pain and functioning were used.ResultsThe prevalence of sleep disturbance was 83%; 74% of the patients with moderate/severe sleep disturbance also had moderate/severe pain problems and 26% had no/mild pain problems. Fifty-seven percent of the patients with no/mild sleep disturbance and 83% of the patients with moderate/ severe sleep disturbance also had depression. The degree of difficulty in performing the 6 selected International Classification of Functioning, Disability and Health activities and mental functions was higher for the category with moderate/severe sleep problems, compared with those with no/mild sleep problems.ConclusionTo optimize rehabilitation for patients on long-term sick-leave experiencing difficulties in returning to work, the results indicate a need also to focus attention on sleep problems and not only on pain and depression. This may entail the planning of measures to improve decision-making and concentration and alleviate lassitude, fatigability, sadness and pessimistic thoughts.

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