Sentence examples for been studied before from inspiring English sources

Has this question ever been studied before, and if so, what did those studies show?

Research engine WoW has been studied before, but not in this context.

Given that marriage and happiness have been studied before, what makes your results unique?

This cost-effectiveness, which has not been studied before, is the subject of our trial.

This has been studied before, and similar findings were reported by Cinar and colleagues [ 4].

Of the 17 skulls reported in Science, seven have not been studied before.

Scheduling for flows has been studied before.

This parameter has not been studied before.

These business-to-business services have not been studied before.

This correlation has been studied before via measurement activities.

Its prevalence in the Philippines has never been studied before.