The phrase "comparable groups" is correct and can be used in written English.
It is typically used in statistics or experiments when comparing two or more groups that have similar characteristics or are being treated identically. Example: The study was designed to compare the academic performance of two comparable groups of students, one from a traditional classroom setting and the other from an online learning environment.
They gave 4-year-olds and 6-year-olds five days of training with these games and compared them to comparable groups of children with no training.
The main purpose of employing a matching algorithm was to compare the two antibiotic treatments across comparable groups of patients.
NOex was measured using a chemiluminescence analyzer in controls and two comparable groups of asthmatic children.
Measures need to be used to assure comparable groups regarding prognostic variables such as weight.
Setting estimates per flag has been dicey, Mr. Nannos said, since so few comparable groups have survived.
In the program, it found, 25 percent fewer people than in comparable groups needed expensive interventions such as nursing care.
But although it's a crowd-pleaser, some people complain that El Gran Combo can sound repetitive in its concerts, rehashing the same feel-good old hits, and that it has been less innovative than comparable groups.
"School children using domestic waters containing as little as one part per million of fluoride," the article reported, "experienced only half to a third as much dental decay as comparable groups using water that contains no fluoride".
In both groups the prevalence of cancer was substantially less than to be expected in comparable groups of the civil popu lation in England and Wales of the same age (100-120 deaths).
Sampson tested comparable groups of children in the 1980's and in the 1990's and found that the presence of antibodies to peanuts had increased by 55percentt.
To assess the latter, i.e. price responsiveness, the participants were split up in two comparable groups which were subject to a different moment of evening peak-pricing.
