HISTORICAL COHORT STUDY Meaning and
Definition
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A historical cohort study is a type of observational research design used in epidemiology to investigate the relationship between exposure to a specific factor or risk factor and the occurrence of a disease or outcome over a period of time in the past. It involves assembling a cohort, or group of individuals who share a common characteristic or exposure, based on their historical exposure status. The cohort is identified from existing records or databases, such as medical records or registries.
The individuals in the cohort are followed up retrospectively, with their exposure to a particular factor being assessed based on available records or surveys conducted in the past. The occurrence of the outcome or disease of interest is then determined by reviewing additional records or administrative databases. By comparing the rates of disease occurrence between different exposure groups, the association between the exposure factor and the outcome can be assessed.
The historical cohort study design is particularly useful for studying rare diseases or outcomes that require a long follow-up period. It allows researchers to obtain exposure information from existing records, which reduces costs and time associated with data collection. However, it relies heavily on available data and might be limited by missing or incomplete records. Despite these limitations, historical cohort studies provide valuable insights into the etiology and natural history of diseases, helping to inform public health policies and interventions.
Common Misspellings for HISTORICAL COHORT STUDY
- gistorical cohort study
- bistorical cohort study
- nistorical cohort study
- jistorical cohort study
- uistorical cohort study
- yistorical cohort study
- hustorical cohort study
- hjstorical cohort study
- hkstorical cohort study
- hostorical cohort study
- h9storical cohort study
- h8storical cohort study
- hiatorical cohort study
- hiztorical cohort study
- hixtorical cohort study
- hidtorical cohort study
- hietorical cohort study
- hiwtorical cohort study
- hisrorical cohort study
- hisforical cohort study
