The phrase "a previous study tested" is correct and usable in written English.
It can be used when referring to research that has been conducted before the current study or analysis being discussed.
Example: "In our research, we build upon the findings of a previous study tested on a similar population."
Alternatives: "an earlier study examined" or "a prior study evaluated".
The result is unexpected because a previous study tested the whole chromosome 10 of Sp and found no incompatibility of this Sp chromosome with Sc genome [19].
A previous study tested for the presence of 3 facultative symbionts in A. glycines (Serratia symbiotica, Regiella insecticola and H. defensa) using universal primers spanning the intergenic spacer between the 16S and 23S rDNA genes [80].
In the context of a medical thesis, a previous study tested seven fresh-frozen cadaver knees biomechanically [ 16].
A similar control condition was used successfully in a previous study testing the effectiveness of cognitive behavior therapy for the treatment of IBS [ 22].
The MTD of NGR hTNF was established at 45 μg m−2 as 1-h intravenous infusion in a previous study testing a dose interval from 0.2 to 60 μg m−2, with DLTs consisting of grade 3 IRRs (van Laarhoven et al, 2010).
In a previous study testing the feasibility of modifying the work environment as a means of reducing occupational sedentary time through promoting active sitting, our team provided portable pedal machines (MagneTrainer, 3D Innovations) to 18 sedentary desk workers for 4 weeks.
In a previous study testing Finnish subjects the frequency of the 118G allele was considerably lower, i.e. 11.1% in unaffected controls and 13.6% among alcohol-dependent individuals (Bergen et al., 1997).
However, one previous study tested a range of vibration frequencies [ 36].
Our previous study tested an identical treatment regimen without oxaliplatin (i.e., gemcitabine with sandwich 5FU 3DCRT; Goldstein et al, 2007).
While all control subjects in the previous study tested demonstrated a decreased ability in TOJ in the presence of synchronized conditioning stimuli delivered to unilateral stimulus sites, none of the autism subjects showed a significant alteration in TOJ with the same synchronized conditioning stimuli.
Finally, none of the previous studies tested for a possible interaction between functions.
