Genotype and coffee consumption
|
Frequency (%)
|
Odds ratio (95% confidence interval)
|
Adjusted odds ratioa(95% confidence interval)
|
---|
Normal hemoglobin level (hemoglobin ≥14 g/dL)
|
Anemia (hemoglobin <14 g/dL)
|
---|
Mt5178C
| | | | |
<1 cup per day
|
99 (83.2)
|
20 (16.8)
|
1 (reference)
|
1 (reference)
|
1 to 3 cups per day
|
104 (84.6)
|
19 (15.4)
|
0.904 (0.456 to 1.795)
|
1.140 (0.527 to 2.467)
|
≥4 cups per day
|
17 (70.8)
|
7 (29.2)
|
2.038 (0.748 to 5.556)
|
3.771 (1.088 to 13.06)*
|
| | |
P for trend = 0.386
|
P for trend = 0.078
|
Mt5178A
| | | | |
<1 cup per day
|
51 (82.3)
|
11 (17.7)
|
1 (reference)
|
1 (reference)
|
1 to 3 cups per day
|
80 (92.0)
|
7 (8.0)
|
0.406 (0.148 to 1.115)
|
0.383 (0.118 to 1.249)
|
≥4 cups per day
|
20 (95.2)
|
1 (4.8)
|
0.232 (0.028 to 1.915)
|
0.301 (0.029 to 3.094)
|
| | |
P for trend = 0.049
|
P for trend = 0.137
|
- aOdds ratio adjusted for age, body mass index, habitual alcohol consumption, habitual smoking and green tea consumption. *P <0.05.