As stated in the Introduction, our main aim / objective / target / purpose / goal was to …
As stated in the Introduction, the research was conducted / undertaken / carried out in order to …
Given that / Since our main aim was, as mentioned in the Introduction, to …
Before interpreting our results, we remind the reader of / would just like to restate our main aims.
Returning to the hypothesis / question posed at the beginning of this study, it is now possible to state
that …