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Correlation of serum uric acid level with duration of COPD.
| Duration of COPD | N | Serum UA (mg/dl) (mean± SD) | SE | 95% CI | Minimum-Maximum | p-value |
|---|---|---|---|---|---|---|
| < 5 years | 12 | 4.27 ±1.15 | 0.33 | 3.53-5.01 | 2.4-6.3 | 0.03 |
| 5-10 years | 11 | 4.28 ±1.47 | 0.44 | 3.28-5.27 | 2.2-7.4 | |
| >10 years | 16 | 5.67 ±1.85 | 0.46 | 4.68-6.62 | 2.9-10.1 | |
| Total | 39 | 4.85 ±1.67 | 0.26 | 4.30-5.39 | 2.2-10.1 |
COPD; chronic obstructive pulmonary disease, N; number of cases, UA; uric acid, SD; standard deviation, SE; standard error, CI; confidence interval.
