id author title date pages extension mime words sentences flesch summary cache txt cord-289901-xb1wg3xv Krantz, Steven G. Level of underreporting including underdiagnosis before the first peak of COVID-19 in various countries: Preliminary retrospective results based on wavelets and deterministic modeling 2020-04-09 .txt text/plain 732 49 52 title: Level of underreporting including underdiagnosis before the first peak of COVID-19 in various countries: Preliminary retrospective results based on wavelets and deterministic modeling 5 We propose a model-based evaluation of underreporting of coronavirus in various countries using the methods we recently developed using harmonic analysis, 5 that is, to develop full epidemic data from partial data (using a wavelet approach). However, our predictions for underreporting as of March 9 in a couple of European countries were close to the reported number of COVID-19 cases as more cases surfaced from March 9 to March 16, 2020. Furthermore, we considered daily new cases (>10) up to the first reported peak of COVID-19 cases and the corresponding date ranges for all the countries for which such data were available. We constructed the Meyer wavelets for the reported and adjusted data after adjusting the infected number in the population for underreporting. ./cache/cord-289901-xb1wg3xv.txt ./txt/cord-289901-xb1wg3xv.txt