Discussion
A higher number of tests/positive test results ratio, reflecting a more
aggressive screening strategy for SARS-Cov-2, was associated with lower
rates of death and severe disease in Regions of Italy. Although the
association was maintained after adjusting for some confounders, the
possibility of other unaccounted confounders cannot be excluded.
Moreover, results are specific for the time range considered. Despite
these limitations, this association should be considered by
policy-makers in other Countries faced by the threat of the
epidemic.