Then after the end of the guidance, statistical analysis of the three groups' former scores and subsequent scores is taken. After three months and a half, a tracking survey conducted was done.
在辅导结束后对实验组、对照组和控制组的前后测成绩分别进行统计分析,并在三个月后进行了追蹤调查。
The purpose of this paper is to analyze the changes in the subjective health of the elderly based on the data from 2002 and 2005 national tracking survey of the elderly.
本文旨在回答我国老年人健康自评的变化,从而为改善老年人的健康状况提供参考。
Graduates quality tracking survey for part of unit of choose and employ persons found that good quality evaluation of graduate rate was 100%.