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Depressive Symptoms Moderate the Association Between Functional Level at Admission to Intensive Post-Stroke Rehabilitation and Effectiveness of the Intervention
Abstract
Introduction
Previous
studies showed that depression acts as an independent factor in
functional recovery after stroke. In a prospective cohort of patients
admitted to intensive inpatient rehabilitation after a stroke, we aimed
to test depression as a moderator of the relationship between the
functional level at admission and the effectiveness of rehabilitation at
discharge.
Methods
All
patients admitted to within 30 days from an ischemic or hemorrhagic
stroke to 4 intensive rehabilitation units were prospectively screened
for eligibility to a multicenter prospective observational study.
Enrolled patients underwent an evidence-based rehabilitation pathway. We
used clinical data collected at admission (T0) and discharge (T1). The
outcome was the effectiveness of recovery at T1 on the modified Barthel
Index (proportion of achieved over potential functional improvement).
Moderation analysis was performed by using the PROCESS macro for SPSS
using the bootstrapping procedure.
Results
Of
278 evaluated patients, 234 were eligible and consented to enrolment;
81 patients were able to answer to the Hospital Anxiety and Depression
Scale (HADS) and were included in this analysis. The relationship
between the functional status at admission and rehabilitation
effectiveness was significant only in persons with fewer depressive
symptoms; depression (HADS cut-off score: 5.9) moderated this
relationship (P = .047), independent from age and neurological impairment.
Conclusions
Our
results suggest that depression moderates between the functional status
at admission and the functional recovery after post-stroke
rehabilitation. This approach facilitates the identification of
subgroups of individuals who may respond differently to stroke
rehabilitation based on depression.
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