The phrase "as part of a previous study" is correct and usable in written English.
You can use it when referring to a component or element that was included in an earlier research project or analysis.
Example: "The data was collected as part of a previous study on climate change impacts."
Alternatives: "in connection with an earlier study" or "in the context of a prior study."
The hemicellulose-amended incubations were performed as part of a previous study examining the impacts of timber harvesting on decomposition using identical methods as described here for cellulose.
We used the ratio of exposure to toxicity (REXTOX) model proposed by the OECD, which had been successfully validated in the study area as part of a previous study and which was extended to calculate pesticide concentrations in adjacent streams.
This hypothesis was developed based on data available in the literature and also collected as part of a previous study (Chugh et al. 2007a) that concluded that the different-size CCPW fractions have a higher acid-forming potential (potential acidity or PA) and lower neutralization potential (NP) as compared to FCPW.
The analyzed human experimental data were generated as part of a previous study [23].
MLH1 expression on tissue microarrays was analysed as part of a previous study (Cooper et al, 2008).
We used 635 of 637 NPA extracts that had been collected and stored as part of a previous study.
CNVs were called as part of a previous AGP study.
The analysis of blood samples was performed during 2007 as part of a previous case control study and has previously been described in detail [ 7].
Segmentation and computing the airway is part of a previous study [13].
The study area is a polygon of 15,700 km2, originally delineated as part of a previous project [37], located in Liwale district, southeastern Tanzania (36°50′ 38°48′E; and 8° 10°50′S (Fig. 1).
The in vivo studies used mice that had been injected with lanthanide-labeled proteins as part of a previous experiment.
