I de fire 12 ugers effektstudier blev patienter med Restless Legs Syndrome randomiseret til at få ropinirol eller placebo og effekten på scoren på IRSL skalaen i uge 12 blev sammenlignet med baseline.
In the four 12-week efficacy studies, patients with Restless Legs Syndrome were randomised to ropinirole or placebo, and the effects on the IRLS scale scores at week 12 were compared to baseline.