The phrase "a minimal difference in" is correct and usable in written English.
It can be used when discussing slight variations or distinctions between two or more items, concepts, or measurements.
Example: "There is a minimal difference in the results of the two experiments, indicating that the changes made had little impact."
Alternatives: "a slight difference in" or "a negligible difference in".
There was only a minimal difference in the average ACT scores of men and women.
We found a minimal difference in the stress-strain curves of the latter two.
Due to the small number of patients, a statistical analysis was not performed, but the results indicated a minimal difference in osseous defect depth as compared with baseline and between groups.
In my experience, that makes only a minimal difference in cooking time and doesn't improve the final quality of the grain at all.
San Diego was the only California city, and one of just five nationwide, to report a minimal difference in urban and suburban graduation rates; less than 1 percentage point separated the two figures.
We found only a minimal difference in the transcriptional activity of the reporter in both backgrounds (Figure 5B).
The sample size was calculated based on an alpha error of 0.05 and a beta error of 0.2, with a minimal difference of 20% in terms of the intubation success rate (compared to 65%).
We considered a minimal difference of 20% in the proportion of responders on the adequate relief scale (that is, more than two weeks' adequate relief in four weeks) between the active treatments and placebo to be clinically relevant.
The resultant sample size (*1/*1, n=47; *2/*2, n=22) had an 80% power to detect a minimal difference of 3.7% in arterial diameter change in response to nitrates between these groups.
4) MIREDIF should represent a meaningful minimal difference in response in the sense that it would justify a choice between two interventions in a clinical setting.
The sample size was determined to allow for 20% attrition and noncompliance and to provide 85% power and 95% confidence interval to detect a minimal difference of 0.5 μmol/l in MDA between two diet interventions.
