Meanings of empirical relationship in English

An empirical relationship between syringe availability and receptive syringe sharing (RSS) was assessed.

However, the empirical relationship between the choice of genes to sequence and the quality of branch length estimation remains ill defined.

This overview closes by raising several open questions on the conceptual and empirical relationship between different approaches towards understanding brain structure, function and connectivity.

We then analyse empirical relationships between AGB density deficits and forest cover changes, population density, burned areas and livestock density.