Sickness absence and disability pension patterns before and after ischemic stroke: A Swedish longitudinal cohort study with matched references.

Introduction: The aim was to determine ischemic stroke patients' sickness absence and disability pension before and after stroke, and compare these to that of matched references.

Patients and methods: All working-aged individuals (aged 18-61) in Sweden with incident ischemic stroke in year 2000, 2005, 2010, or 2015, respectively, and five population-based matched references to each stroke patient. Each cohort was followed 1 year prior stroke and 3 years after. We calculated rates and mean days of sickness absence and disability pension among stroke patients and references and computed trajectories of absence days with predictors of high sickness absence and disability pension.

Results: Number of patients with incident ischemic stroke in 2000 (N = 2728), 2005 (N = 2738), 2010 (N = 2767), and 2015 (N = 2531). Mean stroke age was 53 years and rate of men was 64%. Mortality rate within 12 months after stroke date decreased from 8.1% in 2000 to 4.8% in 2015. Sickness absence for patients was 31.1% in the year prior their stroke, versus 13.7% for references, both groups mainly due to mental and musculoskeletal diagnoses. Factors associated with future high mean number of sickness absence and disability pension days were elementary educational level; adjusted OR (CI) 3.47(2.38-5.05), being single; 1.67(1.29-2.16), female sex 1.72(1.31-2.26), diabetes; 1.86(1.18-2.92), and aged >50; 2.25(1.69-2.98).

Discussion and conclusion: Ischemic stroke patients have more absence days compared to matched references even before the stroke, mainly related to mental and musculoskeletal diagnoses. Future research should address the impact of efficient stroke treatment on sickness absence and disability pension.