Frozen Shoulder and the Risk of Parkinson's Disease: A Danish Registry-Based Cohort Study.

Background: Frozen shoulder may be an early preclinical symptom of Parkinson's disease (PD).

Objective: To examine PD risk after frozen shoulder diagnosis and to evaluate this disorder as a possible manifestation of parkinsonism preceding the clinical recognition of PD and possible target for screening.

Methods: Danish population-based medical registries were used to identify patients aged ≥40 years with a first-time frozen shoulder diagnosis (1995-2016).

Major comorbid diseases as predictors of infection in the first month after hip fracture surgery: a population-based cohort study in 92,239 patients.

Purpose: Comorbidity level is a predictor of infection in the first 30 days after hip fracture surgery. However, the roles of individual comorbid diseases as predictors of infection remain unclear. We investigated individual major comorbid diseases as predictors of infection after hip fracture surgery.

Any infection among patients with hip fracture: Predictive ability of Charlson, Elixhauser, Rx-Risk, and Nordic comorbidity indices.

Background: In studies on infection after hip fracture surgery, a common and serious complication, it remains unknown which comorbidity index is best for case-mix confounder adjustment. We evaluated the predictive ability of Charlson Comorbidity Index (CCI), Elixhauser Comorbidity Index (ECI), Rx-Risk Index (Rx-Risk), and Nordic Multimorbidity Index (NMI) for any infection up to 1 year from discharge after hip fracture surgery.

Methods: Using Danish medical registries, we included 92,600 patients (mean age 83 years) surgically treated for hip fracture between 2004 and 2018.

Comorbidity and risk of infection among patients with hip fracture: a Danish population-based cohort study.

Unlabelled: Impact of comorbidity on infection risk among hip fracture patients is unclear. We found high incidence of infection. Comorbidity was an important risk factor for infection up to 1 year after surgery.

Osteonecrosis of the jaw among cancer patients in Denmark: risk and prognosis.

Osteonecrosis of the jaw (ONJ) is a serious complication of anti-resorptive therapy used in the treatment of multiple myeloma and cancerous bone metastases. In this study, patients with either multiple myeloma or solid tumours with a simultaneous or subsequent record of anti-resorptive treatment or bone metastases were identified using population-based medical registries. These patients were followed for the outcome of ONJ.