The phrase "a previous study comparing" is correct and usable in written English.
It can be used when referring to an earlier research work that makes comparisons between different subjects or variables.
Example: "A previous study comparing the effects of different diets on weight loss showed significant results."
Alternatives: "an earlier study comparing" or "a prior study comparing".
This is in agreement with a previous study comparing the microbiopsy technique with the traditional open biopsy technique in the vastus lateralis of the quadriceps femoris muscle [57].
Results from this study are consistent with the results from a previous study comparing silica-doped γ-Al2O3 samples to pure γ-Al2O3 samples.
In a previous study comparing both activity against bacteria and toxicity against tissue cells under the same and standardized conditions, we were able to demonstrate that copper ions exhibit a most favorable ratio between bactericidal activity and cell toxicity (Heidenau et al. 2005).
In a previous study comparing MME-induced dento-skeletal changes on postero anterior cephalograms in pre-pubertal patients with those in an untreated control group [22], MME was found to be an effective treatment option for improving dento-skeletal transverse dimensions and correcting posterior crossbite.
These findings are consistent with a previous study comparing different PET delineation methods (except FLAB) where they found AT40 and CT are the best performing methods for assessing lesion sizes in comparison to thresholding, relative thresholding [13], absolute SUV and gradient-based watershed [12] method [15].
In a previous study comparing CGH data from 102 MFHs and 82 leiomyosarcomas, several chromosomal regions with differences in copy number between the two groups were identified [23].
We note the following observations that relate to these specific comparisons of NKX2-5 tArgets: A) Previous studies comparing DamID and ChIP-chip experiments performed in Drosophila reported "a high degree of overlap" (Negre et al., 2006, Moorman et al., 2006, Tolhuis et al., 2006, van Bemmel et al., 2010, Yin et al., 2011).
A previous study compared eight different tibial tray designs, including six symmetric and two asymmetric designs.
A previous study compared GST-L1 to a VLP multiplex immunoassay, which is biologically similar but technically different from our VLP-ELISA.
A previous study compared two mouse models of intestinal tumorigenesis, ApcR850X (Min) and Apc1322T 1322Tthe the latter a model of human codon 1309 changes.
A previous study compared education and income to determine which was most strongly related to smoking, and whether each factor had an independent effect [ 7].
