Table 4 Odds ratios (ORs) (95% confidence interval) for having risk factors of stroke according to the quartiles of serum total antioxidant capacity (TAC) and malondialdehyde (MDA)

Serum TAC^¥ (μmol/L)

2939.00

2453.00

4102.00

4916.50

No. cases/ controls

40/ 32

36/ 60

40/ 40

36/ 64

Model ¹

1

0.4 (0.13–1.66)

0.80 (0.22–2.87)

0.51 (0.14–1.79)

0.98

Model ²

1

0.49 (0.14–1.76)

0.80 (0.22–2.93)

0.50 (0.14–1.79)

1.00

 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

68/ 60

28/ 72

32/ 32

24/ 24

 Model ¹

1

0.34 (0.11–1.04)

0.88 (0.26–2.93)

0.88 (0.23–3.32)

0.30

 Model ²

1

0.32 (0.10–1.01)

0.92 (0.27–3.12)

1.03 (0.26–4.06)

0.27