The phrase "as a past study" is correct and usable in written English.
It can be used when referring to a previous research or analysis that has been conducted in the past.
Example: "As a past study indicated, the effects of climate change are becoming increasingly severe."
Alternatives: "according to a previous study" or "based on earlier research".
The minimum income we offered them was BDT 100 (US$1.488) as it was reported in a past study as the minimum monthly income of a volunteer CHW [14].
The present study has shown that the tsunami prediction from a CMT solution would work satisfactorily for the 2013 Santa Cruz Islands earthquake tsunami even though the earthquake source had been modeled as a complicated source in a past study.
Information on both current medication use and past medication use was shown to be equally useful, when use of a past study agent is included as a type of past medication, which supports the requirement to have longitudinal information in a Medication Profile as well as current medication information.
37 This is in contrast to our own findings as well as past studies, which generally link lower SES to overall poorer dietary outcomes.
Medium volume hospitals were determined by consulting minimum institutional volume recommendations published in the ACC/AHA guidelines as well as past studies [ 4, 8, 19- 22].
The study shows that subthreshold depression is a clinically relevant issue for GPs but raises the possibility that quality improvement might not be as necessary as past studies showed.
However, the results also raise the possibility that quality improvement might not be as necessary as past studies showed since the GPs had sensible strategies for the management of these patients at hand.
Interestingly, the M26I, P158Δ and L166P mutants were expressed at levels similar to WT DJ-1, which is in contrast to our immunoblotting data above as well as past studies that found decreased stability of these proteins.
Additionally, these results are both internally consistent both with the models presented in this study, as well as consistent with past studies on populations of people with unrecognized HIV [ 5].
