Background:
Independence
and reintegration into community roles are important patient-centered
outcomes after stroke. Depression and cognitive impairment are common
post-stroke conditions that may impair long-term function even years
after a stroke. However, screening for these post-stroke comorbidities
remains infrequent in stroke prevention clinics and the utility of this
screening for predicting long-term higher-level function has not been
evaluated.
Aims:
To
evaluate the ability of a validated brief Depression, Obstructive sleep
apnea, and Cognitive impairment screen (DOC screen) to predict
long-term (2-3 years after stroke) community participation and
independence in instrumental activities of daily living post stroke.
Methods:
One
hundred twenty-four patients (mean age, 66.3 [standard deviation =
15.7], 52.4% male) completed baseline depression and cognitive
impairment screening at first stroke clinic visit, and telephone
interviews 2 to 3 years post stroke to assess community independence
(Frenchay Activities Index [FAI]) and participation (Reintegration to
Normal Living Index [RNLI]). A subset of these patients also consented
to complete detailed neuropsychological testing at baseline. Univariate
and multivariate linear (FAI) and logistic (RNLI) regression analyses
were used to determine the individual relationship between baseline data
(predictors) and follow-up scores.
Results:
Older age (β = −0.17,
P = .001), greater stroke severity (β = 1.84,
P = .015), more depressive (β = −2.41,
P = .023), and cognitive (β = −2.15,
P = .046) symptoms independently predicted poor instrumental activity (
R2 = .27;
P
< .001). Measures of executive dysfunction were the strongest
correlates of poor instrumental activity. Higher depression risk was the
only significant predictor of participation on the RNLI in regression
modeling (odds ratio = 0.46,
P = .028).
Conclusions:
Baseline
DOC screening in stroke prevention clinics shows that symptoms of
depression and cognitive impairment are independent predictors of
impaired higher-level functioning and community reintegration 2 to 3
years after stroke. Novel rehabilitation and psychological interventions
targeting people with these conditions are needed to improve long-term
patient-centered outcomes.
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