18 October 2020 : Clinical Research
Expression of Matrix Metalloproteinase-2, Matrix Metalloproteinase-9, Tissue Inhibitor of Metalloproteinase-1, and Changes in Alveolar Septa in Patients with Chronic Obstructive Pulmonary Disease
Yongxiang Zhang1ABCDE, Yuechuan Li1AEFG*, Zhen Ye1BD, Hui Ma1CFDOI: 10.12659/MSM.925278
Med Sci Monit 2020; 26:e925278
Table 2 The exacerbation rate in 1 year and GOLD groups in the patients with COPD.
| Mild (n=8) | Moderate (n=24) | Severe (n=8) | |
|---|---|---|---|
| None | 7 (17.5) | 15 (37.5) | 3 (7.5) |
| Once | 1 (2.5) | 6 (15) | 2 (5) |
| Twice | 0 (0) | 3 (7.5) | 2 (5) |
| Thrice | 0 (0) | 0 (0) | 1 (2.5) |
| A | 7 (17.5) | 12 (30) | 0 |
| B | 1 (2.5) | 9 (22.5) | 5 |
| C | 0 (0) | 2 (5) | 1 (2.5) |
| D | 0 (0) | 1 (2.5) | 2 (5) |
| GOLD – Global Initiative for Obstructive Lung Disease. | |||