Objective: To compare the predictive validity of trunk control in sitting position assessed by Trunk Impairment Scale and balance in lying, sitting and standing posture assessed by Postural Assessment Scale for Stroke patients on functional outcome in stroke survivors.
Design: Prospective observational study.
Setting: A single rehabilitation hospital in Italy.
Subjects: Sixty of 68 consecutive subjects admitted to a rehabilitation hospital after stroke.
Main measures: We performed Trunk Impairment Scale and Postural Assessment Scale for Stroke patients at admission to inpatient rehabilitation. Outcome measures at discharge were Functional Independence Measure score and destination (classified as either home or institution).
Results: After adjustment for 14 potential confounders, including Functional Independence Measure score at admission to rehabilitation, both Trunk Impairment Scale and Postural Assessment Scale for Stroke patients scores were significantly associated with the Functional Independence Measure score at discharge (P = 0.010 and P =0.04, respectively), change in the Functional Independence Measure score during rehabilitation (P = 0.003 and P<0.001, respectively), Functional Independence Measure effectiveness (P = 0.024 and P =0.017, respectively) and destination at discharge (P = 0.040 and P =0.032, respectively). The panel of prognostic variables predicted 64—65% of the variance in the final Functional Independence Measure score, 30—35% of the variance in the change of the Functional Independence Measure score during rehabilitation, and 45—46% of the variance in the Functional Independence Measure effectiveness depending on the inclusion of either Trunk Impairment Scale or Postural Assessment Scale for Stroke patients score among the predictors.
Conclusions: Both trunk performance in sitting position and balance in lying sitting and standing posture after stroke predicted functional ability and destination at discharge from inpatient rehabilitation. Scores from the Postural Assessment Scale for Stroke patients may have a slightly better prognostic value than scores from the Trunk Impairment Scale.
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