No of cups | Total coffeea | Boiled coffee | Filtered coffee | ||
---|---|---|---|---|---|
Combined with other typesb | Only boiled coffee | Combined with other types | Only filtered coffee | ||
Age-adjusted HR, CI 95%c | |||||
≤ 1 cups/day | 1.0 (ref) | 1.0 (ref) | 1.0 (ref) | 1.0 (ref) | 1.0 (ref) |
2-3 cups/day | 0.87 (0.67-1.13) | 1.12 (0.83-1.53) | 1.03 (0.70-1.51) | 0.98 (0.79-1.23) | 0.93 (0.70-1.23) |
4-7 cups/day | 0.76 (0.59-0.99) | 1.06 (0.78-1.44) | 0.87 (0.59-1.26) | 0.89 (0.71-1.13) | 0.79 (0.60-1.06) |
≥ 8 cups/day | 0.44 (0.29-0.67) | 0.43 (0.2-0.91) | 0.42 (0.19-0.91) | 0.48 (0.29-0.79) | 0.45 (0.26-0.75) |
p for trend | < 0.0001 | 0.21 | 0.02 | 0.002 | 0.03 |
Multivariate-adjusted HR, CI 95%d | |||||
≤ 1 cups/day | 1.0 (ref) | 1.0 (ref) | 1.0 (ref) | 1.0 (ref) | 1.0 (ref) |
2-3 cups/day | 0.91 (0.70-1.19) | 1.08 (0.79-1.46) | 1.04 (0.71-1.54) | 0.99 (0.79-1.24) | 0.99 (0.75-1.31) |
4-7 cups/day | 0.84 (0.65-1.1) | 1.10 (0.81-1.50) | 0.92 (0.62-1.36) | 0.95(0.76-1.20) | 0.91 (0.68-1.21) |
≥ 8 cups/day | 0.52 (0.34-0.79) | 0.48 (0.23-1.03) | 0.45 (0.21-1.01) | 0.55 (0.33-0.91) | 0.55 (0.32-0.94) |
p for trend | 0.003 | 0.36 | 0.07 | 0.12 | 0.07 |