1998
DOI: 10.1093/oxfordjournals.epirev.a017964
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Evolution of the Cohort Study

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Cited by 72 publications
(31 citation statements)
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“…Each individual subject has been followed for a varied amount of time, and data collection comprises an event time (GA for fetai death) or censoring time (GA for live birth), a censoring indicator (fetal death or live birth), and a set of covariates. Under this data structure, an appropriate form for analysis is Cox's semiparametric proportional hazards model (Cox DR, 1972;Kalbtleich et al, 1980;Breslow and Day, 1987;Samet et al, 1998;Thomas D, 1998 To this end, the data are reconstructed by using % to represent the use of induction of labor over time and across geographic regions. The effect of confounding by indication at the individual-level may not appear at the ecologic level (Greenland et al, 1989;Wen et al, 1999).…”
Section: Strategy For Statistical Modelingmentioning
confidence: 99%
“…Each individual subject has been followed for a varied amount of time, and data collection comprises an event time (GA for fetai death) or censoring time (GA for live birth), a censoring indicator (fetal death or live birth), and a set of covariates. Under this data structure, an appropriate form for analysis is Cox's semiparametric proportional hazards model (Cox DR, 1972;Kalbtleich et al, 1980;Breslow and Day, 1987;Samet et al, 1998;Thomas D, 1998 To this end, the data are reconstructed by using % to represent the use of induction of labor over time and across geographic regions. The effect of confounding by indication at the individual-level may not appear at the ecologic level (Greenland et al, 1989;Wen et al, 1999).…”
Section: Strategy For Statistical Modelingmentioning
confidence: 99%
“…A cohort study is assumed to involve a prospective approach, unless the adjective retrospective designates an exception to the usual procedure (ie, a study that is initiated after the outcome event occurs and involves the analysis of previously collected baseline data). 7 The magnitude of association between a predictive factor and occurrence of an adverse outcome event within a specified period of time is often expressed as a risk ratio (RR), which is the proportion of exposed group members who experience the event divided by the proportion of unexposed group members who experience the event. The term rate ratio is used to compare incidence rates (ie, events per unit of time) in the exposed and unexposed groups.…”
Section: Cohort Study Advantagesmentioning
confidence: 99%
“…badania i analizy umieralności w grupach pracowników narażonych na działanie substancji rakotwórczych (10). Pierwsze badania kohortowe przyczyniły się do ustalenia m.in.…”
Section: Ustalanie Wartości Najwyższych Dopuszczalnych Stężeń Dla Subunclassified