Follow-up frequencies within the Swedevox registry for patients in the DISCOVERY cohort
| LTOT n (%) | LTMV n (%) | CPAP n (%) | |
| Baseline | 25 797 (100%) | 8111 (100%) | 65 803 (100%) |
| 1-year follow-up | 16 015 (62%) | 4624 (57%) | 25 854 (39%) |
| 3-year follow-up | N/A | 3088 (38%) | N/A |
CPAP, continuous positive airway pressure; LTMV, long-term mechanical ventilation; LTOT, long-term oxygen therapy.