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Oxygen treatment received in AECOPD inpatients during the study period.
| 2019, n (%) | 2020, n (%) | Chi-square | p value | |
|---|---|---|---|---|
| Venturi mask used (n) | 120 (84.5%) | 58 (69.0%) | 7.541 | 0.006 |
| Normal face mask/non-rebreather mask (n) | 7 (4.9%) | 16 (19.0%) | 11.508 | 0.001 |
| No oxygen mask (n) | 15 (10.6%) | 10 (11.9%) | 0.097 | 0.756 |
