title: Genetic epidemiological study of schizophrenia: two modes of sampling.
abstract: The ascertainment of probands according to place of residence in hospitals or in the community has enabled our sampling to be representative of whole subpopulations of patients. Probands from psychiatric hospitals are characterized by biased clinical parameters. Our sampling procedure provides important preliminary results which appear to be contradictory to those produced by conventional sampling methods.
authors.affiliation: Eitanim Government Psychiatric Hospital D.N. Shimshon, Jerusalem, Israel.
authors.forename: M S
authors.initials: MS
authors.lastname: Ritsner
authors.forename: S I
authors.initials: SI
authors.lastname: Karas
authors.forename: E I
authors.initials: EI
authors.lastname: Drigalenko
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015982:Bias; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012494:Sampling Studies; D012559:Schizophrenia / Q000453:epidemiology* / Q000235:genetics