The phrase "among different grades of" is correct and usable in written English.
It can be used when discussing variations or classifications within a certain category, such as quality, level, or type.
Example: "The study examined the performance of students among different grades of academic achievement."
Alternatives: "across various levels of" or "within distinct categories of".
We found no overall difference in error rate among different grades of prescriber, and newly qualified doctors were not more likely to make errors than their senior colleagues.
Differences between normal and cancerous tissues, and among different grades of cancerous tissues, also hamper facile detection.
In ANOVA followed by Tukey HS, the Go-Gn-SN angle and overbite were statistically significant among different grades of ankyloglossia (P < 0.05).
In the past several years, DNA microarrays have been used to identify differential gene expression among different grades of brain tumors [1], for tumor classification [2] [4], prognosis [5], [6], and screening for epigenetic changes [7], [8].
The Kruskal-Wallis test was executed to compare ITSS degrees among different grades of gliomas.
Lastly, Kruskal-Wallis test was used to compare the SIS ratio of bone SPECT/CT among different grades of sacroiliitis in plain radiography.
Amount of volume expansion after initial echocardiogram did not differ among the different grades of diastolic dysfunction.
The overall difference in MCM2 mRNA expression among the different grades of the precancerous epithelia dysplasia and SCC of the tongue is highly statistically significant (p = 0.000; Kruskal-Wallis test) (Table 1; Figure 2C).
Previously we found that transglutaminase (liver derived enzyme known to stabilize the scar formation) did not show significant differences among patients with different grades of cirrhosis and HCC [ 34].
However, it should be noted that gliomas comprise a relative heterogeneous group of tumors, thus overlapping in rCBV values among different grades might be observed.
However this is not different among different grades [ 21].
