
Originally Posted by
Sportman
Italy death rate 6.6% (8.5% for Lombardia)
The case fatality rate (CFR) (death / cases * 100), sometimes confused with the mortality or death rate, does not seem so simple to calculate.
Deaths:
- There is a delay between current deaths and related infections, you should take the current n. of dead and n. of cases of N days ago, where N is not easy to calculate.
- Do all countries calculate death in the same way?
Many of those who have died in Italy already suffered from serious illnesses (e.g. cancer, diabetes and heart disease) that put them in grave danger, then the virus "destabilized them".
We include them as COVID-19 deaths (died with the virus); do all countries do the same or do they only include a healthy person who died exclusively of the virus (died for the virus)?
Cases:
- It also depends on the number of checks carried out.
If you check the whole population you will have a high number of cases, including asymptomatic ones, and CFR will be small.
If you check only the deads you will have CFR = 100%.
For example, South Korea carries out detailed checks while Italy has carried out detailed checks only in the early days and now checks only symptomatic people.
I do not write other considerations to not make the post too heavy.
Italy's CFR, 2020/03/13, https://www.epicentro.iss.it/coronav...rafica_eng.pdf
Code:
Age (years) Deaths [n (%)] CFR
0-9 0 (0%) 0%
10-19 0 (0%) 0%
20-29 0 (0%) 0%
30-39 2 (0,2%) 0,2%
40-49 4 (0,4%) 0,2%
50-59 24 (2,4%) 0,8%
60-69 77 (7,6%) 2,7%
70-79 360 (35,4%) 10,8%
80-89 438 (43,0%) 17,5%
>90 96 (9,4%) 21,1%
Not reported 16 (1,6%) 2,8%
Total 1017 (100%) 6,2%
Links:
- Worldometers death rate: https://www.worldometers.info/corona...us-death-rate/
- 2019 Novel Coronavirus COVID-19 (2019-nCoV) Data Repository by Johns Hopkins CSSE: https://github.com/CSSEGISandData/COVID-19
- Italy COVID-19 Data Repository: https://github.com/pcm-dpc/COVID-19
- Italy COVID-19 Maps and Charts: http://arcg.is/C1unv , https://lab24.ilsole24ore.com/coronavirus/

Originally Posted by
RichSelian
i believe there are still many cases not getting detected in Italy.
Sure.
Italy only checks the symptomatic people (~12000 swabs per day have been done in the last 3 days), now it's no longer possible to detect all the infected.
We are still in the phase of increasing cases; it will take at least 2 weeks to see if and how the latest restrictions limit the infection.
In the last few days Spain has significantly worsened compared to France and Germany.