本研究采用成组序贯临床试验(Group Sequential Trial,GST)，观察益肾活络丸的治疗CPPS的疗效和不良反应，为进一步研究开发及其推广提供临床依据。 1.
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Methods: 62 patients with lower respiratory tract infection were divided into the intravenous drip group, spray group 1 and 2 according to sequential trial.
方法：62例下呼吸道感染患者按序贯试验方法分为静滴组、雾化1组、雾化2组。
Methods With the design of sequential trial, the patients were divided into a treatment group and a control group.
方法：采用序贯试验设计方法分治疗组与对照组。
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