Table 1 Impact of the drinking temperature, the numbers of drinks/day and of demographic factors (age, BMI) on induction of nuclear anomalies reflecting DNA damage and disturbance of cell division in buccal cells. p-values from Poisson regression.
Endpoint | Predictor | OR | 95% CI | p-value | p for trend |
|---|---|---|---|---|---|
MN cells | Tea temperature < 55 °C | 1 (Ref) | |||
55–59 °C | 1.19 | 0.73–1.94 | 0.487 | ||
60–64 °C | 1.17 | 0.70–1.94 | 0.553 | ||
65–69 °C | 0.94 | 0.50–1.77 | 0.854 | ||
70 + °C | 1.16 | 0.76–1.77 | 0.487 | 0.738 | |
> 60 °C | 1.00 | 0.74–1.35 | 0.979 | ||
Overweight (BMI 25–29.9) | 0.99 | 0.71–1.40 | 0.971 | ||
Age (per decade) | 0.95 | 0.79–1.15 | 0.611 | ||
# drinks/day | 0.96 | 0.76–1.23 | 0.773 | ||
Total MN | Tea temperature < 55 °C | 1 (Ref) | |||
55–59 °C | 1.20 | 0.75–1.90 | 0.448 | ||
60–64 °C | 1.11 | 0.69–1.78 | 0.677 | ||
65–69 °C | 1.23 | 0.71–2.11 | 0.461 | ||
70 + °C | 1.24 | 0.83–1.83 | 0.290 | 0.385 | |
> 60 °C | 1.08 | 0.82–1.43 | 0.577 | ||
Overweight (BMI 25–29.9) | 1.00 | 0.73–1.38 | 0.993 | ||
Age (per decade) | 0.93 | 0.78–1.11 | 0.405 | ||
# drinks/day | 1.00 | 0.80–1.26 | 0.986 | ||
Nuclear buds | Tea temperature < 55 °C | 1 (Ref) | |||
55–59 °C | 1.03 | 0.74–1.43 | 0.882 | ||
60–64 °C | 1.02 | 0.73–1.42 | 0.910 | ||
65–69 °C | 1.26 | 0.88–1.81 | 0.210 | ||
70 + °C | 1.25 | 0.95–1.63 | 0.106 | 0.146 | |
> 60 °C | 1.11 | 0.92–1.34 | 0.275 | ||
Overweight (BMI 25–29.9) | 1.06 | 0.85–1.32 | 0.622 | ||
Age (per decade) | 0.99 | 0.87–1.11 | 0.823 | ||
# drinks/day | 0.96 | 0.82–1.13 | 0.638 | ||
BN | Tea temperature < 55 °C | 1 (Ref) | |||
55–59 °C | 1.05 | 0.87–1.26 | 0.632 | ||
60–64 °C | 0.92 | 0.76–1.12 | 0.412 | ||
65–69 °C | 0.92 | 0.73–1.16 | 0.477 | ||
70 + °C | 1.01 | 0.86–1.18 | 0.944 | 0.653 | |
> 60 °C | 0.94 | 0.84–1.05 | 0.262 | ||
Overweight (BMI 25–29.9) | 0.95 | 0.83–1.08 | 0.435 | ||
Age (per decade) | 0.92 | 0.86–0.99 | 0.026 | ||
# drinks/day | 0.96 | 0.87–1.05 | 0.340 |
