Chunk #29 — Results — Success of the ES Recruitment Strategy — Weighting the ES Sample

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The enrichment study of the Minnesota twin family study: increasing the yield of twin families at high risk for externalizing psychopathology.

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Table 4 provides the prevalence of DSM-III-R diagnoses in ES twins, adjusted for the ES sampling plan. We also present rates for the younger cohort of MTFS twins. The two are quite comparable, attesting to the success of the weighting scheme. For comparison, we also present the simple, unweighted rates. These are substantially higher than the weighted rates, as expected given the large number of cases in the ES screened sample.