Dataset from A Randomized, Double-Blind, Placebo-Controlled, Parallel Group, Multicenter Study to Evaluate the Efficacy and Safety of GW685698X 200 mcg Twice Daily, GW685698X 200 mcg and 400 mcg Once Daily in the Morning, and GW685698X 200 mcg and 400 mcg Once Daily in the Evening Compared With Placebo for 8 Weeks in Adolescent and Adult Subjects (12 Years of Age and Older) With Persistent Asthma

This study is designed to determine if the investigational drug is effective and safe in individuals with asthma.

本研究旨在明确该试验性药物（investigational drug）在哮喘患者中的有效性与安全性。