The phrase "attainment group" is correct and usable in written English.
It can be used in educational contexts to refer to a group of students who have achieved a certain level of proficiency or success in a particular subject or skill.
Example: "The school has created an attainment group for students who excel in mathematics to provide them with advanced learning opportunities."
Alternatives: "achievement group" or "proficiency group".
For the previous studies, it was expected that PCS and MCS scores would be lower in less educational attainment group [ 29, 42].
This coding implies that a 'baseline' model is estimated for the low educational attainment groups, while the deviations from this model for the higher educational attainment group are modeled through the moderation parameters (m′, a′, c′, and e′).
The median UCAS tariff in this low attainment group was 320 points, equivalent to between grades ABB and AAB at A level that is, just below the entry requirement for most UK medical schools (the median tariff for the group as a whole was around 350 points).
Self-efficacy and social support for physical activity explained virtually all of the differences in physical activity across educational attainment groups.
Indeed, for the recession period, characterized by a steep drop in the demand for low-skill labor, the differences across all educational attainment groups are much smaller.
The preferred method varied across educational attainment groups.
However in this study a trend across educational attainment groups was only observed for awareness about cancer risk factors.
For the Danish respondents, we found no differences among educational attainment groups for most of the surveyed items.
As educational attainment was collected directly from participants and was not open to interpretation, subgroup analyses were therefore limited to comparisons of awareness across educational attainment groups.
Lower educational attainment groups, those in the economically inactive groups, and lower household income were associated with increased odds of having a long standing illness.
Agreement about smoking was similar across all educational attainment groups but agreement about other cancer risk factors tended to be highest in those with highest educational attainment and lowest in those with the lowest educational attainment (Table 4).
