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Age or Age Group—Use these fields to limit your search to studies that accept participants with the specified age or from the selected age groups. You may either enter a specific age, in years, in the Age field or you may click on the check box to the left of each age group you wish to include in your search. More than one age group may be selected.

Partial years may be entered using a decimal value. For example, 23 and 1/2 years would be entered as 23.5

If you enter a specific age in the Age field and select one or more age groups then studies covering either that age or the age group will be included.

If you do not specify an age or select any age group, then all ages will be included.

The age groups are:
  • Child (birth–17)
  • Adult (18–65)
  • Senior (66+)