Table 1 Inclusion- and exclusion criteria for participation in the home oxygen treatment and monitoring program

- Recovering from severe COVID-19

- SpO2 > 92% and breathing frequency < 30/min in rest with oxygen supplementation

- No immediate risk of death without oxygen supplementation

- Safety measures for home oxygen treatment fulfilled

- No severe problems with the treatment or monitoring expected at home

- Progressive COVID-19

- Clinically unstable

- High flow oxygen support

- Fire hazards at home

- Multiple severe underlying conditions

- Inability to take food and drugs orally

- Inadequate cooperation or safety not guaranteed