"aggregate difference" is correct and usable in written English.
You could use it to refer to the total amount of difference between two or more items taken as a whole. For example, "The aggregate difference between the income levels of the two countries was 50 percent."
The measure of effectiveness they use is called "cumulative regret," or the aggregate difference between the rewards that the subjects in the trial received — in the case of a drug trial, the mitigation of disease symptoms — and the rewards that they would have received had they all been administered what proved to be the best-performing option.
The aggregate difference in expenditure in the 6-month period was approximately 130,000 NOK (column 3).
The aggregate difference in total cost was approximately 130,000 NOK based on these estimates (column 6).
The aggregate difference (AD) for independent models (Table 9) varied from −6.06 to 0.21% in the study area and from 0.98 to 6.0 outside the study area.
kern-0pt} {sqrt n }}) was 11.96%, which was almost twice as large as the largest aggregate difference; therefore, the models can be applied inside and outside the study area without requiring any corrections, according to this criterion.
But the four dissenting Justices in Roper rejected the idea that the same claim of diminished culpability could be made for all juveniles, since the Court's analysis had been based on aggregate differences between youths and adults, which may have little bearing on the sophistication of individual defendants, particularly those at the "margins between adolescence and adulthood".
With a longer follow-up period, Rupp and Bell (2003) found that small aggregate differences in earnings between treatment and control groups persisted during the six years following random assignment (though the annual difference in each individual year was not statistically significant).
Consequently, as detailed below, we sought to employ multivariate statistical methods to distinguish between wound spectra based on aggregate differences measured across a wide wavenumber range.
In the current analysis, the difference between IVT-AFL and IVR remained (+4.12 letters; MTC analysis) after adjustment for aggregate differences between studies and treatment arms in baseline visual acuity.
Multivariate statistics, as used in our study, enable the evaluation of aggregate differences in spectra across a wide wavenumber range resulting in a "spectral signature" characteristic of individual phases of the wound healing process.
