Description of emergency department (ED) visits for chronic obstructive pulmonary disease (COPD)
| COPD-related ED visits | Number | Mean | SD | Minimum | Maximum |
| Women | |||||
| 40–64 | 496 | 0.47 | 0.79 | 0 | 5 |
| >64 | 298 | 0.28 | 0.57 | 0 | 3 |
| Total | 794 | 0.75 | 1.04 | 0 | 7 |
| Men | |||||
| 40–64 | 484 | 0.45 | 0.74 | 0 | 4 |
| >64 | 491 | 0.46 | 0.7 | 0 | 4 |
| Total | 875 | 0.92 | 1.05 | 0 | 6 |
| Total 40–64 | 980 | 0.92 | 1.16 | 0 | 6 |
| Total >64 | 789 | 0.74 | 0.94 | 0 | 6 |
| Total | 1769 | 1.66 | 1.62 | 0 | 10 |