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Mean total International Prostate Symptom Score (IPSS) at baseline and at week 16 in the 0.2 mg group (tamsulosin 0.2 mg once daily) and the 0.4 mg group (tamsulosin 0.4 mg once daily) (n=116). 0.2 mg group (n=90): tamsulosin 0.2 mg once daily, 0.4 mg group (n=26): tamsulosin 0.4 mg once daily, a: p<0.001 versus baseline, b: p<0.001 versus baseline.
