'wider age groups' is correct and usable in written English.
It can be used to refer to a range of people across different age groups, typically when the speaker wishes to emphasize a diversity of ages. For example, "This program is designed to reach wider age groups, from younger children to seniors."
But this nonprofit educational organization also offers courses for wider age groups (in categories of 21-plus, 30-plus and 50-plus years), as well as programs for couples and for women only.
We predicted a negligible impact of both IPTi and IPTc on the infectious reservoir and on transmission intensity except where the wider age groups for IPTc were simulated.
In Victoria, New Mexico, and Switzerland, incidence rates were reported for wider age groups than those targeted by screening.
The moderate ability of the tools to predict stroke in these older people is therefore similar to the results seen in previous research across wider age groups.
However, increasingly severe diseases, such as SARS and influenza A (H1N1), have entered our society within recent decades, and have affected wider age groups than have past epidemics.
Although further research of wider age groups, particularly those spanning into the seventh and eighth decades of life, will be required to confirm these findings, the current results provide compelling preliminary evidence that the early menopausal period during the late fourth decade to the mid-sixth decade of life are a critical period for interrelated muscular and BMD decline.
"Although the results of this latest study indicate a higher prevalence than the first survey, they are consistent with the previous findings and the range of the prevalence estimates largely overlap," said Gill. "We have looked at a larger number and a wider age group of patients and this new estimate is more precise".
It was the straw that broke the back of a long and difficult process for the development of W2F, and we decided to change our approach to the entire programme, opening it up to a wider age group while making the criteria for participant selection tougher.
Magazines with homogeneous age group readerships tend to use greater values of visual power than those with wider age group readerships.
Our findings among a wider age group living in an area with a low rate of parasite exposure might therefore be expected to correspond to levels of protection described among young infants living in much higher transmission settings in Kenya [37] and Tanzania [38].
Whereas if it's a wider age group it's not as bad.
