Stroke, Vol 19, 1354-1358, Copyright © 1988 by American Heart Association
MJ Reding and E Potes
Life table analysis is a powerful statistical tool that has become the
preferred technique for studying both the natural history of and the effect
of treatment on disease outcome. We have found only one report using life
table analysis to study rehabilitation outcome after stroke. We assessed
the recovery of both independent ambulation and overall self-care function
in 95 consecutive patients with unilateral hemispheric stroke using life
table analysis. Our results support the segregation of patients into the
following prognostic subgroups at the time of entry into the rehabilitation
program (mean +/- SD 5 +/- 3 weeks after stroke): 1) motor deficit only, 2)
motor deficit plus somatic sensory deficit, and 3) motor deficit plus
somatic sensory deficit plus homonymous visual deficit. The probabilities
of reaching independence in ambulation, being able to walk 150 feet with
assistance, reaching independence in self-care function, and reaching a
point of assisted self care (Barthel Index score of greater than or equal
to 60) are highly significantly different among subgroups. The interval
after stroke required to reach the plateau phase of recovery is also
significantly different among subgroups. We propose that life table
analysis can be used 1) to define patient outcome goals, 2) to define the
time required to reach such goals, 3) to identify patients with medical or
behavioral comorbidity who are functioning below their expected level, and
4) to assess the effect of alternative treatment regimens on both final
outcome and time to reach that outcome.
ARTICLES
Rehabilitation outcome following initial unilateral hemispheric stroke. Life table analysis approach
Cornell University Medical College, Burke Rehabilitation Center, White Plains, New York 10605.
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