The combination therapy exhibited an obvious superiority over tamsulosin alone in improving IPSS ( @ micro @ vs @ micro @ ) , USPSS ( @ micro @ vs @ micro @ ) , Qmax ( -LSB- @ micro @ -RSB- ml/s vs -LSB- @ micro @ -RSB- ml/s ) , and OABSS ( @ micro @ vs @ micro @ ) ( P < @ ) , but there were no obvious differences in residual urine , urine routine test results and adverse events between the two therapies ( P > @ ) .