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Mean change from baseline in total International Prostate Symptom Score (IPSS) (a), IPSS storage subscale (b), IPSS voiding subscale (c), and IPSS-quality of life (QoL) (d) of the four treatment groups. *P < 0.05 versus placebo; †P < 0.05 versus tamsulosin; ‡P < 0.05 versus tolterodine extended release (ER).
