两组间临床有效率差异有统计学意义，而细菌清除率差异无统计学意义。

There were no significant differences between two groups on bacterial clearance rate.

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目的比较左氧氟沙星注射液与头孢噻肟针剂治疗社区获得性下呼吸道感染的临床疗效、细菌清除率和安全性。

OBJECTIVE to compare the clinical efficacy, the eradication rates of pathogens and safety between levofloxacin and cefotaxime in treating community acquired lower respiratory tract infections.

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结果去甲万古霉素在老年患者中的治愈率为20%，有效率为79%，细菌清除率76.7%，不良反应发生率5.4%；

Result In the treatment group, the cure rate was 20%, the effective rate 79%, the bacteria eradication rate 76.7%, and the adverse effect rate 5.4%.

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