Sample description and comparison of study groups.
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资源简介：
Average: Average level, Sichuan provincial average annual family income at the time of the study. D or W: Divorced or Widowed, N: No school education, E: Elementary (Grade 1–6), M: Middle School (Grade 7–9), H: High School (Grade 10–12), C: College or above.p = probability (significant group differences printed in bold).
创建时间：
2015-12-02
