Objective To investigate the reasonableness of efficacy index and indication selection by comparing 4 phase II clinical trial designs of roxithromycin/ambroxol tablets.

• 目的通过比较罗红霉素(大环内酯类抗生素)/盐酸氨溴索(去痰药)4种II期临床试验方案,研究其疗效评价指标和适应症选择的合理性。