[BickNowstrom]

Prognosis for permanent lung damage is you have five years to live.

EDIT: sourced: https://en.wikipedia.org/wiki/Pulmonary_fibrosis which we saw in SARS coronavirus-induced pulmonary fibrosis.

> There is no known cure. [...] Life expectancy is generally less than five years.

[anonuser123456]

Now stratify by age and cause. In the case of SARS.

[BickNowstrom]

ARDS is not permanent lung damage. You may recover lung function after ARDS. You will not recover from permanent lung damage. It will even deteriorate and your prognosis is less than 5 years to live. Stratification is a red herring, but feel free to do so.