Table 2.
ORs* of polycystic ovary syndrome by tertiles of the dietary total antioxidant capacity in Iranian population
|
| ||||
|---|---|---|---|---|
| Dietary antioxidant variables | Tertiles of energy-adjusted intake | P for trend | ||
| 1st | 2nd | 3rd | ||
|
| ||||
| Dietary TAC (mmol/day) | ||||
| No. cases/No. controls | 131/196 | 93/196 | 79/196 | |
| Base model† | 1.00(Ref.) | 0.87(0.53-1.07) | 0.77 (0.49-0.91) | 0.015 |
| Full model‡ | 1.00 (Ref.) | 0.89 (0.48-1.03) | 0.81 (0.59-0.96) | 0.038 |
| α-Tocopherol (mg/day) | ||||
| No. cases/No. controls | 138/196 | 89/196 | 76/196 | |
| Base model† | 1.00 (Ref.) | 0.73(0.53-1.03) | 0.69 (0.50-0.83) | <0.001 |
| Full model‡ | 1.00 (Ref.) | 0.77 (1.23-1.02) | 0.73 (0.56-0.88) | 0.003 |
| Vitamin C (mg/day) | ||||
| No. cases/No. controls | 143/196 | 83/196 | 77/196 | |
| Base model† | 1.00 (Ref.) | 0.75(0.43-1.08) | 0.74 (0.73-1.05) | 0.069 |
| Full model‡ | 1.00 (Ref.) | 0.82 (0.83-1.03) | 0.79 (0.83-0.97) | 0.039 |
| β-Carotene (μg/day) | ||||
| No. cases/No. controls | 124/196 | 90/196 | 89/196 | |
| Base model† | 1.00 (Ref.) | 0.80 (0.49-1.19) | 0.77(0.65-1.08) | 0.105 |
| Full model‡ | 1.00 (Ref.) | 0.84 (0.60-1.18) | 0.81 (0.67-0.98) | 0.046 |
| Lycopene (μg/day) | ||||
| No. cases/No. controls | 122/196 | 93/196 | 88/196 | |
| Base model† | 1.00 (Ref.) | 0.96 (0.69-1.22) | 0.99 (0.73-1.18) | 0.112 |
| Full model‡ | 1.00 (Ref.) | 0.94(0.79-1.03) | 0.93 (0.63-1.07) | 0.059 |
| Zinc (mg/day) | ||||
| No. cases/No. controls | 100/196 | 88/196 | 115/196 | |
| Base model† | 1.00 (Ref.) | 1.13 (0.71-1.29) | 0.99 (0.72-1.39) | 0.305 |
| Full model‡ | 1.00 (Ref.) | 1.05 (0.83-1.15) | 1.02 (0.95-1.19) | 0.114 |
| Selenium (μg/day) | ||||
| No. cases/No. controls | 130/196 | 98/196 | 75/196 | |
| Base model† | 1.00 (Ref.) | 1.09 (0.78-1.24) | 1.27 (0.62-1.33) | 0.286 |
| Full model‡ | 1.00 (Ref.) | 1.11 (0.72-1.21) | 1.25 (0.65-1.39) | 0.273 |
| Magnesium (mg/day) | ||||
| No. cases/No. controls | 128/196 | 90/196 | 85/196 | |
| Base model† | 1.00 (Ref.) | 0.91 (0.59-1.03) | 0.89 (0.50-1.04) | 0.062 |
| Full model‡ | 1.00 (Ref.) | 0.93 (0.53-0.98) | 0.91 (0.55-0.98) | 0.047 |
|
| ||||
Adjusted odds ratio (OR) estimates and 95% confidence intervals (CIs) for polycystic ovary syndrome (PCOS), according to the tertile of each dietary antioxidant variables. *; A conditional logistic regression model, † ; Adjusted for age (5-year categories), ‡ ; Adjusted for age (5-year categories), body mass index (BMI, Kg/m2), waist circumference (WC, cm) intake (Kcal/d), dietary intake of fiber (g/d), familial history of PCOS (yes/no) and physical activity (MET/h/d).