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Table 1.

Definition of important variables.

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Table 2.

Impact of economic policy uncertainty on firms’ investment in innovation.

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Table 3.

Impact of economic policy uncertainty on firms’ innovation investments through three channels.

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Table 3 Expand

Table 4.

Impact of economic policy uncertainty on R&D output.

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Table 5.

Static panel and dynamic panel regression results.

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Table 6.

Comparison of the three EPU indices.

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