Table 3

Dietary intakes among the study population

Cases (n = 527)Controls (n = 645)Pa
Intake from diet (not including supplements)b
 Folate (μg/day)316 ± 142 (70–1215)316 ± 152 (84–1161)0.93
 Vitamin B12 (μg/day)6.84 ± 4.48 (0.38–27.91)6.72 ± 5.21 (0.40–61.16)0.67
 Vitamin B6 (mg/day)2.18 ± 0.87 (0.68–6.13)2.13 ± 0.90 (0.62–6.52)0.34
 Methionine (g/day)2.00 ± 0.83 (0.40–5.63)1.94 ± 0.80 (0.27–6.25)0.21
 Alcohol (g/day)10.1 ± 16.6 (0–118.7)6.6 ± 13.7 (0–96.3)0.0001
Dietary intakes (including diet and supplements)b
 Folate (μg/day)399 ± 238 (70–1952)412 ± 243 (84–1457)0.35
 Vitamin B12 (μg/day)8.88 ± 11.52 (0.38–221.82)9.24 ± 9.23 (0.40–105.34)0.57
 Vitamin B6 (mg/day)4.78 ± 13.07 (0.68–106.09)7.12 ± 18.33 (0.62–103.7)0.01
Kilocaloriesb2098 ± 774 (698–4881)2007 ± 718 (696–4738)0.04
Dietary fiberb (g)21.8 ± 9.5 (4.8–60.4)21.6 ± 9.7 (5.6–76.1)0.71
Percentage of kcal from fatb31.2 ± 6.5 (12.2–48.3)30.4 ± 6.5 (8.7–54.7)0.03
Proportion of individuals with dietary intakes (including supplements) <75% RDAc
 Folate44%43%0.85
 Vitamin B123%6%0.005
 Vitamin B67%9%0.18
Current alcohol intake
 None39%45%
 ≤7 g/day25%29%
 >7 g/day37%26%0.001
  • a P based on χ2 or t test.

  • b Mean ± SD (range).

  • c 1998 Recommended Daily Allowances (RDAs) for men and women ages 51 and older: folate, 400 μg/day; vitamin B12, 2.4 μg/day (most of this amount to be obtained from foods fortified with B12 or from supplements); vitamin B6, 1.7 mg/day for men and 1.5 mg/day for women.