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:For example, personality disorders have been reported to be significant predictors of low scores across a range of subscales on the SF-12 [8], including mental health, social functioning and role impairment due to emotional problems [9, 10].
Category: