As observed in the previous section, the stratification module partitioned the 65 high schools into 12 sets of comparably performing groups in which all schools within a higher grouping were better performers than any school in each of the lower groupings.
For highest educational qualification, 41% of the sample fell into the highest category ('Degree or Professional Diploma'), with roughly even percentages in the lower groupings (19% 'No qualifications, GCSE D G grades, or Level 1 NVQ'; 18% 'GCSE A* C grades, or Level 2 NVQ'; 17% 'A/AS level, or Level 3 NVQ'; with 6% 'Other/Prefer not to say').
Study author Tammy Campbell said: "If teachers place younger pupils early in their school career in lower ability groupings, and older pupils in higher groupings, this hasty (and potentially premature) sorting may have a significant impact on subsequent differences in educational attainment".
The 300-base long 3'-terminal regions of sequences from lower priority groupings were iteratively BLASTed against corresponding regions of sequences from all higher priority groupings and those producing alignments with ≥ 90% identity over ≥ 115 bp were removed.
Fourth, related species often have divergent reactions to disturbance, even within lower taxonomic groupings (families or genera).
Within lower social groupings, the 'marshal' acted as a farrier.
When we compared the taxonomic composition of the 2 mussel samples to each other, they were similar at higher taxonomic organization, but differed slightly in the composition of lower taxonomic groupings (Table 1. Fig. 1a).
In this population-based sample (including over-representation of lower socioeconomic groupings), the main predictors of intention to attend a hypothetical eye health test were Attitude, Perceived control over attendance, Anticipated regret if did not attend and black ethnicity.
Focusing the attention on lower level groupings, it is interesting to note that the protein behavior at the two dates was quite similar but not identical, because although most differences were more marked after 8 d, some other ones (e.g. spots 724, 1341, 1321) were essentially associated to the 5-d stage.
30 This study identified that, in a population-based sample (including over-representation of lower socioeconomic groupings), the main predictors of intention to attend for sight testing to detect glaucoma were Attitude, Perceived control over attendance, Anticipated regret if not attended and black ethnicity.
The cancer rates in these groups were three and four times higher than the lower-risk groupings.
