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:This contrasts with findings reported by Sarriot et al. (2004b) on a study of NGO project sustainability that 73% of interviewees (with extensive experience of working with or for health NGOs) disagreed with the statement that ‘[I]nterventions not supported by government structures are not…
Category: