The phrase "are slight differences in" is correct and usable in written English.
It can be used when discussing variations or distinctions between two or more items, concepts, or situations.
Example: "In the study, we found that there are slight differences in the results between the two groups."
Alternatives: "there are minor variations in" or "there are subtle distinctions in".
The substantive criteria are almost identical (with the exception of different age limits), but there are slight differences in the procedural criteria (eg, the number of physicians who must be consulted and the necessity of a written request).
*There are slight differences in how the minimum wage is calculated in different countries.
There are slight differences in the way the two sects pray, but even there you find some Shia who pray as Sunnis do and vice versa, depending on their background.
"Both visors and goggles are equally safe but there are slight differences in the types of clothing worn with each, and in the protocols for putting the equipment on and taking it off".
For the rest of the cases, there are slight differences in the volume of fracture fluid.
There are slight differences in the amount of compression accepted (expressed as "compression ratios").
Of course, it is possible that there may be slight differences in the results caused by the different optimization algorithms used in each of the unique planning systems.
There were slight differences in inhibition of MBP phosphorylation activity in different time points (such as in U0126, SB202190), showing near complete inhibition in some case to relatively less in the other.
We don't approach our menu differently than Miami, so that means there will be slight differences in the dishes as our Caymanian surroundings -- culture and ingredients -- influence them.
We are doing research at the moment that suggests you get advantages in both early and late language acquisition, but there might be slight differences in the type of cognitive processes that are affected.
