所以RRR、ARR、NNT的正负在解释时要注意是基于治疗有效率（effective rate）还是不良事件发生率（adverse event rate）的计算结果就ok。
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要不良心脏事件发生率 major adverse cardiac events
在非治疗期间不良事件发生率两组相似。
Adverse event rates during the off-treatment phase were similar between groups.
两组患者生存率和严重不良事件发生率相似。
Patient survival and severe adverse event rates were similar in both groups.
氟伐他汀治疗与不良事件发生率显著增加无关。
Fluvastatin therapy was not associated with a significant increase in the rate of adverse events.
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