Risk Factors for Symptoms of Depression and Anxiety One Year Poststroke: A Longitudinal Study.

OBJECTIVE

To estimate the relative contribution of psychological factors next to sociodemographic and premorbid/stroke-related factors to the risk of developing symptoms of depression and anxiety after stroke.

DESIGN

Multicenter, longitudinal cohort study.

SETTING

Patients after stroke from 6 general hospitals.

PARTICIPANTS

Patients (N=331) were included at stroke onset and followed up 2 and 12 months after stroke.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Sociodemographic and premorbid/stroke-related information was recorded during hospital admission, whereas psychological characteristics were determined with postal questionnaires 2 months poststroke. Symptoms of depression and anxiety were assessed with the Hospital Anxiety and Depression Scale (HADS) 2 and 12 months poststroke. Multivariable logistic analysis was performed to analyze the influence of sociodemographic, premorbid/stroke-related, and psychological characteristics on depressive symptoms (depression subscale of HADS >7) and symptoms of anxiety (anxiety subscale of HADS >7) 1 year after stroke.

RESULTS

Early depression, stroke severity, posterior cerebral artery stroke, and neuroticism independently explained the variance of depressive symptoms 1 year poststroke (discriminative power, 83%; adjusted R(2) value, 36%). Neuroticism and early anxiety independently explained the variance of symptoms of anxiety 1 year poststroke (discriminative power, 88%; adjusted R(2) value, 44%). Based on these predictive models, nomograms were constructed to visually reflect the individual contribution of each risk factor to the development of long-term mood disorders after stroke.

CONCLUSIONS

Psychological characteristics are important risk factors for poststroke symptoms of depression and anxiety.