In patients with mild or moderate renal impairment (creatinine clearance ≥ 30– 80 ml/ min) compared to those with normal renal function (creatinine clearance > 80 ml/ min), the most commonly reported events and their placebo-corrected frequencies included: constipation (8% versus 4%), dizziness (7% versus 5%), and nausea (4% versus 2%).