Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:Critically, however, our reliability results converge with other investigations in the literature using a variety of methodologies (e.g., Brown et al. 2014; Enock et al. 2014; Schmukle 2005; Staugaard 2009).
Category: