"groups of ages" is a perfectly acceptable phrase in written English.
You can use it whenever you want to describe a group of different ages (e.g. a group of people that includes both adults and children). For example, you could say: "The group at the park included people of all ages, from toddlers to seniors, forming a range of different groups of ages."
On one hand, "Idol" could use a fresh promotional approach after some ratings declines last season, particularly among viewers in the important demographic groups of ages 12 to 17 and 18 to 49.
Three distinct groups of ages can be identified, confirming the sequence of the basaltic units defined by remote sensing: 1) the youngest unit belongs to Tyrrhenian, between 71 ka and 56 ka, 2) the intermediate unit, Pre-Tyrrhenian to Tyrrhenian between 114 ka and 139 ka, and 3) the oldest basaltic unit, surrounding the Al-Lajat plateau, is dated to at least 266 ka.
Altered RyR VDAC interaction in old hearts cannot be explained by a decrease in the expression of these proteins, because the amount of RyR and VDAC, as quantified by immunofluorescence labeling, western blot and proteomics, was similar in both groups of ages.
Compulsive conformity within the peer groups of age mates.
Groups of Age provide differences when explaining entrepreneurial intention.
EE also decreased motor activity in all groups of age.
Patients were divided in 4 groups of age by quartiles (<50 years, 51 64 years, 65 74 years, > 74 years).
Specifically, using categorical groups of age at arrival, they observe a dip at age at immigration 13 19.
However, environmental enrichment (EE) reduced the effects of stress on acetylcholine concentrations in all groups of age.
This is an observational retrospective case control study of 1596 patients divided into three groups of age n1 5–12, n2 13–18, and n3 19 57 years.
The face stimuli were portrait-style digital colour photographs of Caucasian, female faces assigned to four different groups of age (21 30 years, 31 40 years, 41 50 years and 51 60 years).
