留存率是用于反映网站、互联网应用或网络游戏的运营情况的统计指标,其具体含义为在统计周期(周/月)内,每日活跃用户数在第N日仍启动该App的用户数占比的平均值。其中N通常取2、3、7、14、30,分别对应次日留存率、三日留存率、周留存率、半月留存率和月留存率。
2013年,他们将更加重视员工的敬业度,而不是他们的员工留存率。
In 2013, they will focus more on employee engagement to increase their retention rates.
结论:绝大部分患者的种植体周围组织状况良好,这是达到较高累计留存率的关键。
Conclusions:Most patients have healtthy peri-implant tissues which was of higher rate of success.
根据乘法概率法则,将某一年龄段的留存率与前一年龄段的生存率相乘可得该年龄段的生存率。
According to probability principle of multiplication, the survival rate was the product of retention rate at certain period and survival rate at the previous period.
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