"in the existing study" is a correct and usable phrase in written English.
You can use it when you want to refer to a previous study. For example: "In the existing study, it was found that the rate of disease decreased significantly over a five-year period."
Details about which how to derive these waveforms into differential travel time are explained in the existing study of the JUICE project (Yano et al. 2017).
A time-of-arrival type of location estimation was performed in this study not only using techniques introduced in the existing study results of detecting biomedical signals using a UWB radar but also by applying an initial screening method for redundancy reduction and a maximum likelihood observation-target association technique.
Thus, the broad goals of our proposed research are (1) to add measures from the PhenX toolkit that overlap with phenotypic measures in the existing study and (2) to add measures from the PhenX toolkit that represent important areas of measurement that were not included in the parent grant because they were not specifically related to the aims of that investigation.
For example, it makes it possible to increase the size of an existing study by including estimated allele frequencies from pooled samples from additional contemporary groups, rather than having to pool the new samples with samples that have already been genotyped in the existing study.
In the existing study of the US market, there are few models that can explain both mid-term momentum and long-term reversal.
Besides, the article examines the differences between considered factors in the existing studies along with the results obtained from this study.
It also pays attention to the common methodological approaches employed in the existing studies, and it highlights possible paths that future research in the field could consider.
The present work has a valuable attempt to fill the gap in the existing studies and is useful for guiding the water pit thermal storage design.
In the existing studies most researchers have adopted the same definition of effective width which might induce inaccurate bending resistance of composite beam to sagging moments.
Knowledge of nursing mothers residing in urban and rural areas about various danger signs during neonatal period and factors influencing care and treatment preferences for newborn were not given necessary considerations in the existing studies.
