Table 3.
Plasma Antioxidant Status of Subjects According to the Severity of COPD (Presented as Number and %) (n=97)
| Variable (Unit) | Stage I & II (n= 39) | Stage III&IV (n= 58) | P |
|---|---|---|---|
| n (%) | n (%) | ||
| Vitamin E (μmol/L) | |||
| Normal (18.58- 67.34) | 24 (61.5) | 36 (62.1) | 0.96 |
| Low (< 18.58) | 15 (38.5) | 22 (37.9) | |
| Vitamin A (μmol/L) | |||
| Normal (1.05- 3.84) | 27 (69.2) | 42 (72.4) | 0.73 |
| Low (< 1.05) | 12 (30.8) | 16 (27.6) | |
| Vitamin C (mg/dl) | |||
| Normal (0.4-1.5) | 2 (5.1) | 11 (19.0) | 0.049* |
| Low (< 0.4) | 37 (94.9) | 47 (81.0) |
*
p <0.05 is significant using Pearson Chi- Square test