Source: Baker, Scott R.
Source: Bloom, Nick
Source: Davis, Stephen J.
Release: Economic Policy Uncertainty
The World Uncertainty Index determines uncertainty using the frequency of the selfsame word in the quarterly Economist Intelligence Unit country reports.
Please see Hites Ahir, Nicholas Bloom and Davide Furceri (2018), 'The World Uncertainty Index' for additional explanation.
Baker, Scott R., Bloom, Nick and Davis, Stephen J., World Uncertainty Index for Switzerland [WUICHE], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/WUICHE, December 15, 2019.