cohort

  1. M

    Cohort as level 1 regressor in hierarchical age-period-cohort models (HAPC models)

    Dear Talkstats, What a great site! :tup: I cannot believe I only just discovered the site. I look forward to many interesting debates with you guys in the future. Currently, I'm having some trouble understanding the way Raphael J. Nawrotzki and Fred C. Pampel make use of 'Cohort' as a level 1...
  2. S

    Repeated measures with different cohorts

    Dear all, I have data from 3 different art groups (orchestra, dance, musical theatre) collected in 3 different times of measure. Data is questionnaire based. I am interested in if X variable is predicted by Y and Z, and if this relation holds for these three different domains. So I am only...
  3. victorxstc

    Can a cohort study have no control groups (is a clinical series study a cohort)?

    Hi AFAK a cohort study needs a matched control group. However, its definition doesn't necessitate a control group. Moreover, I have read some publications in which the authors had investigated the complications of some treatments, for example rhinoplasty, during a period of time. They did...
  4. victorxstc

    Is my study case-control or retrospective cohort?

    Hi AFAIK if we split the sample by the exposure, it is retrospective cohort; and if we split it by the disease, it is case control. I am studying the association between malocclusion and the efficacy of mastication. I have divided the sample into two groups: people with and without...