Table 3.
Hazard ratios (HRs) and 95 % confidence intervals (CIs) for black tea intake in relation to prostate cancer by duration of follow-up and stage of disease in the Singapore Chinese Health Study
| <8 years of follow-up
|
≥8 years of follow-up
|
|||||
|---|---|---|---|---|---|---|
| Cases, n | HR (95 % CI)a | p for trend | Cases, n | HR (95 % CI)a | p for trend | |
| All cases | ||||||
| None | 85 | 1.0 (ref) | 71 | 1.0 (ref) | ||
| Monthly | 8 | 0.83 (0.40, 1.72) | 14 | 1.58 (0.89, 2.80) | ||
| Weekly | 31 | 1.27 (0.84, 1.92) | 36 | 1.57 (1.05, 2.35) | ||
| Daily | 20 | 1.05 (0.64, 1.71) | 0.5 | 33 | 1.82 (1.20, 2.75) | 0.002 |
| Localized disease | ||||||
| None | 32 | 1.0 (ref) | 30 | 1.0 (ref) | ||
| Monthly | 4 | 1.08 (0.38, 3.06) | 4 | 1.04 (0.37, 2.96) | ||
| Weekly | 13 | 1.41 (0.74, 2.69) | 14 | 1.41 (0.74, 2.66) | ||
| Daily | 10 | 1.40 (0.69, 2.87) | 0.2 | 17 | 2.16 (1.19, 3.93) | 0.01 |
| Advanced disease | ||||||
| None | 51 | 1.0 (ref) | 36 | 1.0 (ref) | ||
| Monthly | 4 | 0.70 (0.25, 1.94) | 8 | 1.81 (0.84, 3.90) | ||
| Weekly | 17 | 1.16 (0.67, 2.02) | 21 | 1.85 (1.08, 3.17) | ||
| Daily | 10 | 0.86 (0.44, 1.70) | 0.9 | 15 | 1.66 (0.91, 3.04) | 0.03 |
a
Adjusted models include variables for age, dialect group, interview year, education, BMI, and smoking history