Such a study is not a true longitudinal study.
这样的方法并不是真正的贯时性研究。
Retrospective analysis of data from a longitudinal study.
回顾分析纵向调查数据资料。
The data come from the National Longitudinal Study of Adolescent Health.
数据来自美国青少年健康长期研究所。
SETTING: Data from the Iowa Longitudinal Study.
场景：来自衣阿华的纵向研究数据。
Longitudinal study is widely applied into medical and biological field.
纵向研究广泛应用于医学、生物学等研究领域。
Longitudinal study is widely applied into medical and biological field.
纵向研究广泛应用于医学、生物学等研究领域。
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