Ct-value of RT-PCR in the new coronavirus (SARS-CoV-2)

A group of Albert Einstein College of Medicine has reported on the correlation between Ct-values and hospital mortality in RT-PCR for the new coronavirus (SARS-CoV-2) from a retrospective statistical analysis.
https://journals.plos.org/plosone/article/authors?id=10.1371/journal.pone.0244777

This is the result of a retrospective study on 1,044 patients hospitalized with COVID-19.
The Ct-value of RT-PCR is divided into quartiles for statistical analysis.
Q1:     Ct =<22.9
Q2: 23.0 <Ct <27.3
Q3: 27.4 <Ct <32.8
Q4: Ct=>32.9

As a result, it has been shown that hospital mortality and Ct-values are inversely correlated.
In other words, the lower the Ct-value, the higher the hospital mortality, and the higher the Ct-value, the lower the hospital mortality.

So, it turns out that the higher the amount of exposed viruses or the proliferation, the higher the hospital mortality.