缺陷的时间趋势。
所观察到的国家间的不同时间趋势可能表明疾病负担正在慢慢向那些近来使用石棉的国家转移的一个早期迹象。
The different time trends observed between countries may be an early indication that the disease burden is slowly shifting towards those that have used asbestos more recently.
选择计算总和了每个参与者全部时间点的一个作用指标，例如，事件的总数、总平均值或者时间趋势。
Alternatively, compute an effect measure for each individual participant which incorporates all time points, such as total number of events, an overall mean, or a trend over time.
应用推荐