Descriptive Characteristics of the sample, by PEV period.
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aBased on 1,520 cases over 57 non-PEV months.bBased on 95 cases over 3 PEV months.cProbability values derived from unadjusted, bivariate Prais-Winsten analyses.Descriptive Characteristics of the sample, by PEV period.
创建时间：
2015-12-02
