The prevalence of insomnia and restless legs syndrome among Japanese outpatients with rheumatic disease: A cross-sectional study.
Kayoko UrashimaKunihiro IchinoseHideaki KondoTakahiro MaedaAtsushi KawakamiHiroki OzawaPublished in: PloS one (2020)
The prevalence of symptomatic insomnia and the prevalence of restless legs syndrome (RLS) are known to be higher among patients with rheumatic diseases compared to the general population. The prevalences of insomnia and RLS reported in a questionnaire by Japanese patients with rheumatic diseases at an outpatient clinic were analyzed herein. The association between the patients' disease activity and their sleep quality was analyzed. Of 121 rheumatic disease patients, 70 were enrolled. The median (interquartile range) age at enrollment was 62.0 (47.8-68.0) years. There were 58 women (82.9%) and 12 men (17.1%), and 43 patients (61.4%) with rheumatoid arthritis (RA), nine (12.9%) with systemic lupus erythematosus (SLE), and 18 (25.7%) with other rheumatic diseases. Twenty patients (28.6%) had one or more moderate-to-severe insomnia symptoms, and 10 (14.3%) were diagnosed with RLS. Among the patients with RA, the swollen joint count based on a 28-joint assessment (SJC28) was significantly higher in the insomnia group (n = 13) compared to the non-insomnia group (n = 30) (p = 0.006). A classification and regression tree (CART) analysis showed that the cut-off points of ≥3 mg/day prednisolone (PSL) treatment and <16.54% as the transferrin saturation (TSAT) value would best predict RLS in rheumatic disease. Patients with rheumatic disease had a high prevalence of symptomatic insomnia and RLS. A higher dose of PSL and lower TSAT were associated with the occurrence of RLS.
Keyphrases
- sleep quality
- disease activity
- systemic lupus erythematosus
- rheumatoid arthritis
- end stage renal disease
- chronic kidney disease
- ejection fraction
- newly diagnosed
- risk factors
- peritoneal dialysis
- prognostic factors
- healthcare
- depressive symptoms
- ankylosing spondylitis
- primary care
- risk assessment
- physical activity
- type diabetes
- patient reported outcomes
- high intensity
- rheumatoid arthritis patients
- systemic sclerosis
- deep learning
- patient reported
- interstitial lung disease
- polycystic ovary syndrome
- early onset
- middle aged