Age Group—Use this field to limit your search to studies that accept participants from selected age groups. You can select more than one age group. If more than one age group is selected, the search results will include studies that accept at least one of the age groups you indicated. If you do not select any age group, all age groups will be included in your search. The age groups are:
  • Child (birth–17)
  • Adult (18–65)
  • Senior (66+)