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:My results give one way to interpret the empirical evidence from Baker et al. (2012) that suggests that fiscal policy uncertainty has been an important force behind the fall in consumption, investment, and output that we have seen during the Great Recession. In addition, my model is consistent with the relatively small effects reported by Fernández-Villaverde et al. (2012b) and Born and Pfeifer (2011) since both studies do not consider the impact of the ZLB.
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