Table 3.
Odds ratios (ORs) (95% confidence interval) for stroke according to the quartiles of serum total antioxidant capacity (TAC) and malondialdehyde (MDA)
| Quartiles of TAC | |||||
|---|---|---|---|---|---|
| Variable | 1st quartile | 2nd quartile | 3rd quartile | 4th quartile | P-trend$ |
| Serum TAC¥ (μmol/L) | 2939.00 | 2453.00 | 4102.00 | 4916.50 | |
| No. cases/ controls | 72/ 32 | 40/59 | 44/62 | 60/35 | |
| Model 1 | 1 | 0.29 (0.09–0.94) | 0.34 (0.11–1.10) | 0.66 (0.21–2.11) | 0.12 |
| Model 2 | 1 | 0.37 (0.10–1.25) | 0.32 (0.09–1.96) | 0.75 (0.23–2.48) | 0.14 |
| Quartiles of MDA | |||||
| Variable | 1st quartile | 2nd quartile | 3rd quartile | 4th quartile | P-trend$ |
| Serum MDA¥ (μmol/L) | 1.44 | 1.91 | 2.06 | 2.29 | |
| No. cases/ controls | 16/ 60 | 48/ 72 | 72/ 32 | 80/ 24 | |
| Model 1 | 1 | 2.50 (0.66–9.38) | 8.43 (2.11–33.60) | 12.50 (2.98–52.30) | 0.00 |
| Model 2 | 1 | 2.12 (0.54–8.31) | 7.98 (1.94–32.80) | 11.97 (2.74–52.35) | 0.00 |
¥ These value is presented as median
$ P-trend was calculated using logistic regression model by considering the median of each quartile of TAC or MDA as a continuous variable
1 Regression model without adjustment
2 Regression model adjusted for age, gender, and body mass index (BMI)