"differences in knowledge" is correct and usable in written English.
For example, you can use the phrase in a sentence like this: "The report highlighted the differences in knowledge between demographics across the nation."
A blackboard model of system behaviour illustrates individual differences in knowledge recruitment due to different tasks and systems used.
Lastly, the sample was too small to see differences in knowledge and behavior in different regions of origin.
There were, of course, differences in knowledge of and appreciation for comedians from differing generations.
There were interesting differences in knowledge score between subjects recruited from the four different hospitals.
This study found significant differences in knowledge and practice scores of the parents of different age groups.
Because all children knew what the tools were for, differences in knowledge alone cannot explain the results.
Differences in knowledge capital account for 20-30 percent of the state variation in per-capita GDP, with roughly even contributions by school attainment and cognitive skills.
The second goal is to determine the main differences in knowledge construction processes in 3D game settings with and without real-time teacher orchestration.
This study aimed to evaluate the level of gynecologic knowledge among college students, particularly to investigate the differences in knowledge between men and women.
This study aimed to examine differences in knowledge, experience, and anxiety across levels of training at elite conservatories and young artist programs in the United States.
It shows that, in theory, the two paradigms seem to be incommensurable but complementary due to differences in knowledge and praxis between the two professions.
