In the Non-Generative AI panel, “AI use” is a 0-1 dummy obtained by firm surveys, while AI patents refers either to a 0-1 dummy for having at least 1 patent (US study) or to the number of patents in firms (for the EU+UK study, where the average number is 0.48 with 2.6 standard deviation, so that firms cumulating more than one patents are relatively few). – Aghion, P., B. Jones and C. Jones (2018), “Artificial Intelligence and Economic Growth”, NBER Chapter in The Economics of Artificial Intelligence: An Agenda, p. 237-28, https://doi.org/10.3386/w23928. – Filippucci, F., P. Gal, A. Leandro, C. Jona-Lasinio and G.