cohort and cross-sectional studies examining the benefits and h

cohort  Millennium Cohort Study The Millennium Cohort Study is following the lives of 19,517 children born across England, Scotland, Wales and Northern Ireland โครงร่างการวิจัยในการหาสาเหตุของโรค การศึกษาแบบ Case Control การศึกษาแบบ Concurrent Cohort แผนการศึกษาชนิดอื่น อิทธิพลของการจับคู่ต่อการวิเคราะห์

A cohort study is a type of epidemiological study in which a group of people with a common characteristic is followed over time  Cohort studies Cohort studies are also termed follow-up or incidence studies In these studies, outcomes among two or more groups initially free of that

In education, cohort is typically applied to students who are educated at the same period of time—a grade level or class of students (for on cohort members Perhaps the most often cited jus- tification for conducting a population-based study is its external validity—that is, the applicability