Comparison of the Orpington Prognostic Scale (OPS) and the National Institutes of Health Stroke Scale (NIHSS) for the prediction of the functional status of patients with stroke

PURPOSE: The aim of our study is to compare the Orpington Prognostic Scale (OPS) and the National Institutes of Health Stroke Scale (NIHSS) and to evaluate whether they help us estimate the future functional status of patients with stroke. METHOD: Twenty-five patients with stroke were administered the OPS and NIHSS on the 7th day of stroke in order to define the severity of the disease, and the Barthel Index was performed in order to evaluate the functional status and the activities of daily living (ADL) at the 1st, 3rd, and 6th months. RESULTS: Both scales were statistically correlated (P = 0.0001). When the predictability of these scales in terms of the ADL and functional status was evaluated, the regression coefficient at the 1st month was -14.746, R(2) = 0.58, P < 0.0001 and -4.885, R(2) = 0.50, P < 0.0001 for OPS and NIHSS, respectively, the same coefficient at the 3rd month was -12.482, R(2) = 0.41, P = 0.001 for OPS and -3.280, R(2) = 0.23, P = 0.016 for NIHSS, and at the 6th month it was -11.662, R(2) = 0.38, P = 0.001 for OPS and -2.997, R(2) = 0.20, P = 0.02 for NIHSS. CONCLUSION: In patients with stroke, OPS and NIHSS had significant contribution to the estimation of the functional status and OPS was more effective than NIHSS.