Age Groups (human studies)

Select one or more age ranges from this list to limit your search to records with human study subjects or studies on human tissue, cells or cell components in the age group(s) selected.

List of Age Groups limits

Note: definitions and coverage information are given for both Embase records and records unique to Medline.

Embryo: first trimester
Indicates humans within the first trimester after conception.

Embase: introduced in 1978
Medline: indicates the first 2 months following conception (available for all years)

Fetus: second/third trimester
Indicates humans within the second and third trimesters after conception.

Embase: introduced in 1978
Medline: indicates from 2 months after conception until birth (available for all years)

Newborn: up to one month
Indicates humans from birth up to one month old.

Embase: introduced in 1978
Medline: defined as for Embase (available for all years)

Infant: 1 to 12 months
Indicates humans from one to twelve months old.

Embase: introduced in 1978
Medline: indicates 1 to 23 months of age (available for all years)

Preschool Child: 1 to 6 years
Indicates humans from one to six years old.

Embase: introduced in 1978
Medline: indicates 2 to 5 years of age (available for all years)

Schoolchild: 7 to 12 years
Indicates humans from seven to twelve years old.

Embase: introduced in 1978
Medline: not available

Child: 1 to 12 years
Indicates humans from one to twelve years old and includes coverage of the 'Preschool Child' and 'School Child' groups.

Embase: introduced in 1983
Medline: indicates 6 to 12 years of age (available for all years)

Adolescent: 13 to 17 years
Indicates humans from thirteen to seventeen years old.

Embase: introduced in 1978
Medline: indicates 13 to 18 years of age (available for all years)

Adult: 18 to 64 years
Indicates humans from eighteen to sixty-four years old.

Embase: introduced in 1978
Medline: indicates 19 to 64 years of age (available for all years)

Aged: 65+ years
Indicates humans from sixty-five years or older.

Embase: introduced in 1978
Medline: defined as for Embase (available for all years)