Table 7.
Percent of patients reporting worsening symptoms on pollution or clean air quality visits.
| Symptoms | COPD | Control | ||
|---|---|---|---|---|
| Clean Air Days | Pollution Days | Clean Air Days | Pollution Days | |
| % (n) | % (n) | % (n) | % (n) | |
| Nasal congestion discharge | 33.33 (3) | 36.36 (4) | 37.5 (3) | 12.5 (1) |
| Activity limitation | 33.33 (3) | 54.55 (6) | 12.5 (1) | 0 (0) |
| Chest tightness | 11.11 (1) | 27.27 (3) | 0 (0) | 25 (2) |
| Cough | 11.11 (1) | 27.27 (3) | 37.5 (3) | 37.5 (3) |
| Shortness of breath | 22.22 (2) | 36.36 (4) | 0 (0) | 0 (0) |
| Sputum thickness | 22.22 (2) | 18.18 (2) | 25 (2) | 37.5 (3) |
| Sputum amount | 33.33 (3) | 27.27 (3) | 25 (2) | 37.5 (3) |
| Wheeze | 11.11 (1) | 18.18 (2) | 12.5 (1) | 12.5 (1) |
Notes: Displayed are the number and percent of patients reporting worsening symptoms on at least one polluted air day and on at least one clean air day for the Control and COPD groups.