The stability of depressive symptoms in college students: An empirical demonstration of regression to the mean
The stability of depressive symptoms in college students: An empirical demonstration of regression to the mean
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DOI：
10.1007/bf02229059
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发表时间：
1995-12-01
影响因子：
1.6
通讯作者：
Krames, L
中科院分区：
文献类型：
--
作者：
Flett, GL;Vredenburg, K;Krames, L
在最近的一篇论文中，Vredenburg，Flett和krames（1993）假设大学生抑郁症状评分的明显不稳定性可能部分归因于被称为平均值的统计回归现象。本研究证明了这一统计学原理。183名大学生在相隔3个月的两个时间点完成贝克抑郁量表（BDI）。与既往结果一致，分析显示症状评分随时间推移发生了实质性变化，在时间1时症状评分升高的许多受试者中明显降低。检查BDI评分随时间的变化量，发现一种模式，接近回归平均现象。统计学检验证实，回归到平均值解释了症状评分随时间的显著变化。这些研究结果的影响进行了讨论，在学生的抑郁症状的性质和不适当的分配科目抑郁或非抑郁组的基础上提高分数的自我报告措施。
In a recent paper Vredenburg, Flett, and krames (1993) hypothesized that the apparent instability of depressive symptom scores in college students may be due, in part to the phenomenon known as statistical regression to the mean. This statistical principle was demonstrated in the current study. A sample of 183 university students completed the Beck Depression Inventory (BDI) at two timepoints separated by a 3-month interval. Consistent with past results, analyses revealed substantial changes in symptom scores over time with decrements being evident among many subjects with elevated symptom scores at Time 1. Examination of the amount of change over time in BDI scores indicated a pattern of findings that approximated the regression to the mean phenomenon. Statistical tests confirmed that regression to the mean accounted for a significant amount of the change in symptom scores over time. The implications of these findings are discussed in terms of the nature of depressive symptoms in students and the inappropriateness of assigning subjects to depressed or nondepressed groups on the basis of elevated scores on a self-report measure.