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The pilot study included patients aged 18-80 with a NIHSSS of 10 or higher who could be treated within 3 hours of symptom onset.
They assessed the predictive value of the following variables: age, gender, history of hypertension, history of heart disease, National Institutes of Health Stroke Scale Score (NIHSSS), lesion volume on diffusion-weighted imaging, time of diffusion-weighted imaging after symptom onset, and enrollment in a drug trial.
* NIHSSS carries a maximum of 6 points: a baseline NIHSSS of less than or equal to 5 gets the full 6 points; an NIHSSS of 6-15 gets 4 points; 16-25 gets 2; scores of greater than 25 get 0.