"before starting this study" is grammatically correct and can be used in written English.
It is typically used to indicate the timing or sequence of events, with "this study" being the action that comes after the event mentioned before. Example: Before starting this study, it is important to review the relevant literature on the topic.
Before starting this study, we should give the following definition.
In Tours, before starting this study, we asked our local ethics committee about the requirement of informed consent.
The investigator was first trained by a registered Griffith's course (Association for Research in Infant and Child Development, Southampton, UK) and examined a minimum of 20 infants under supervision of an experienced neonatologist working in a follow-up program before starting this study.
Statistical analysis will be planned before starting this study.
Before starting this study, we obtained ethical clearance from the Ethical Committees/Institutional Review Boards at all three study centres.
Some team members had already worked together for 6 years before starting this study, and others were added over time.
Before starting this validation study, we obtained permission from Dr. James W. Varni (JWV) to translate the PedsQL 3.0 Cancer Module into Japanese using a standardized validation procedure [ 18].
It's fitting that in the early 70's, before starting this dictionary, Thomson wrote a study of Laurence Sterne, the great digressive comedian of English literature.
Contaminated areas of the harbor were closed to fishing in 1979 (Agency for Toxic Substances and Disease Registry 1995), 14 years before we started this study.
Carotid ultrasonography to assess IMT will be performed by two investigators trained for this before starting the study.
Carotid ultrasound to assess C-IMT will be performed by two investigators trained for this purpose before starting the study.
