Table 4.
Association of 10-yr supplemental zinc use assessed at baseline with prostate cancer by stage and grade among 35,244 men in VITAL cohort.
10-yr avg. zinc (mg/day)b |
Grade |
|||||
---|---|---|---|---|---|---|
Gleason score 2-6 |
Gleason score 7-10 |
|||||
Cases | Adjusted HRa | 95% CI | Cases | Adjusted HRa | 95% CI | |
None | 157 | 1.0 | 122 | 1.0 | ||
0.1-7.5 | 102 | 0.88 | 0.60-1.29 | 81 | 0.85 | 0.55-1.33 |
7.51-15 | 137 | 0.99 | 0.66-1.50 | 99 | 0.85 | 0.53-1.38 |
>15 | 73 | 0.93 | 0.60-1.45 | 43 | 0.70 | 0.41-1.19 |
p-trend | 0.91 | 0.21 |
Stage |
||||||
---|---|---|---|---|---|---|
Local |
Regional/Distant |
|||||
Cases | Adjusted HRa | 95% CI | Cases | Adjusted HRa | 95% CI | |
None | 233 | 1.0 | 51 | 1.0 | ||
0.1-7.5 | 154 | 0.91 | 0.67-1.24 | 31 | 0.58 | 0.26-1.28 |
7.51-15 | 205 | 1.01 | 0.72-1.41 | 33 | 0.50 | 0.21-1.19 |
>15 | 107 | 0.94 | 0.65-1.34 | 11 | 0.34 | 0.13-1.09 |
p-trend | 0.98 | 0.04 |
Multivariate HRs adjusted for education, race, family history, PSA-test within the 2 years prior to baseline, and current multivitamin use
10-yr average zinc includes all individual zinc supplements and multivitamins