Research Article
Correlation between TNF-α -308 and +489 Gene Polymorphism and Acute Exacerbation of Chronic Obstructive Pulmonary Diseases
Table 4
Comparison of the different indicators for the GG genotype and non-GG genotypes.
| Group | No. of samples | Frequency of acute exacerbations | Cough or dyspnea (frequency) | Once/year | >twice/year | Cough | Dyspnea |
| TNF-α-308 | | | | | | GG | 173 | 153 | 20 | 105 | 68 | Non-GG | 25 | 11 | 14 | 8 | 17 | value | | 0.001 | 0.007 | TNF-α +489 | | | | | | GG | 116 | 93 | 23 | 14 | 102 | Non-GG | 82 | 60 | 22 | 27 | 55 | value | | 0.324 | 0.001 |
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