The phrase "a specific age range" is correct and usable in written English.
It can be used when referring to a defined group of ages for a particular purpose, such as research, marketing, or demographics.
Example: "The study focused on participants within a specific age range of 18 to 25 years old."
Alternatives: "a defined age group" or "a particular age bracket."
Remember that millennials happen to fall into a specific age range that carries its own set of identifiably common traits.
At each measurement point a cohort of a specific age range (9 14 years at wave one) was examined.
They can now drill down further into customer demographics in order to carve up more precise segments of a user population – for example, not just smartphone owners, but Android owners who are male, who are in a specific age range, and who are also gamers.
Two features are especially convenient for time-stretched moms and dads -- the age filter that allows you to amend your search results to a specific age range and the amenities search for a quick look at accommodations with cribs, adjoining rooms, child-care programs, laundry facilities and more.
McQueen and McKenzie [12] explored the consequences of allowing the parasite to infect only a limited subset of RBCs (of a specific age range).
Simulation of IPTc interventions is similar to that of IPTi, except intervention is not continuous in time, but rather for a specific age range.
This cohort also has a wide age range (28 63 years old) as the inclusion criteria did not specify any specific age range.
For The A.V. Club, Marah Eakin wrote that although for an adult "Perks suffers from an overabundance of pure, raw angst ... unlike some more arrested development-friendly YA fare like Harry Potter, Perks speaks to a more specific age range and does it well".
A summary of the contribution of maternal transfer to children by specific age range is shown in Supplemental Material, Table 3 (http://dx.doi.org/10.1289/ehp.1103729).org/10.1289/ehp.1103729
Prior studies provided age-stratified data, with high period prevalence in older patients (20.4/100,000 to >200/100,000, depending on period length and specific age range) (5 – 7 ), as expected, because pNTM disease is a disease of the elderly (1, 4, 6, 12 ).
