TABLE 2.
The association of dietary and supplemental intake of selenium with ovarian cancer, African American Cancer Epidemiology Study, 2010–20141
| Intake, μg/d | Cases | Controls | 2 | P-linear3 |
| Dietary | 0.1 | |||
| Q1 (<47.8) | 88 (21.7) | 158 (25.0) | 1.00 Referent | |
| Q2 (47.8–72.6) | 122 (30.0) | 158 (25.0) | 1.19 (0.74, 1.91) | |
| Q3 (72.7–111.7) | 102 (25.1) | 158 (25.0) | 0.98 (0.54, 1.78) | |
| Q4 (>111.7) | 94 (23.2) | 158 (25.0) | 0.66 (0.31, 1.37) | |
| Supplemental | 0.04 | |||
| T1 (nonconsumer) | 203 (50.0) | 274 (43.4) | 1.00 Referent | |
| T2 (0–20.0) | 139 (34.2) | 211 (33.4) | 0.89 (0.66, 1.21) | |
| T3 (>20.0) | 64 (15.8) | 147 (23.3) | 0.67 (0.46, 0.97)* | |
| Total | 0.1 | |||
| Q1 (<60.9) | 110 (27.1) | 158 (25.0) | 1.00 Referent | |
| Q2 (60.9–96.4) | 120 (29.6) | 158 (25.0) | 0.91 (0.60, 1.38) | |
| Q3 (96.5–137.4) | 76 (18.7) | 158 (25.0) | 0.58 (0.35, 0.94)* | |
| Q4 (>137.4) | 100 (24.6) | 158 (25.0) | 0.67 (0.39, 1.14) |
1
Values are n (%) unless otherwise indicated. Supplement or dietary counterpart as covariate was added when appropriate. *P < 0.05, different from the reference level. Q, quartile; T, tertile.
2
Adjusted for age, region, education, parity, oral contraceptive use, menopause, tubal ligation, family history, BMI, smoking status, total energy, and physical activity.
3
P-linear is for a test of linear trend treating quartile and tertile medians as a continuous variable.