Prospective Study

{
  "id": "MLC-T-ENV-022554",
  "term": "Prospective Study",
  "field": "Environment",
  "definition": "1. An epidemiological study which examines the development of disease in a group of persons determined to be presently free of the disease.\n\n2. An epidemiologic study comparing those with an exposure of interest to those without the exposure. These two cohorts are then followed over time to determine the differences in the rates of disease between the exposure subjects.\n\n3. A study in which the investigators plan and manage the intervention of interest in selected groups of patients. As such, investigators do not know what the outcomes will be when they undertake the study.\n\n4. An epidemiologic study comparing those with an exposure of interest to those without the exposure. These two cohorts are then followed over time to determine the differences in the rates of disease between the exposure subjects. [EPA 2003]\n\n5. A study in which the investigators plan and manage the intervention of interest in selected groups of patients. As such, investigators do not know what the outcomes will be when they undertake the study. [NLM/NICHSR 2004]\n\n6. A study in which the disease events to be measured have not occurred when the study begins, and so study participants have no foreknowledge of their possible involvement. Both follow-up studies and case-control studies can be prospective with respect to their accumulation of cases. [NZ 2002]\n\n7. An inquiry in which groups of individuals are selected in terms of whether they are or are not exposed to certain factors, and then followed over time to determine differences in the rate at which disease develops in relation to exposure to the factor. Also called cohort study. [RAIS 2004, SRA 2004]",
  "subject": "Policy and guidance",
  "see_also": [
    "Cohort Study"
  ],
  "references": [
    "Drinking Water Technical & Legal Terms",
    "EPA 2003",
    "NLM/NICHSR 2004",
    "Thesaurus of Terms Used in Microbial Risk Assessment"
  ],
  "url": "https://mlchart.com/terminology/environment/prospective-study/"
}