Table 1: Population descriptive, including nutritional intake data (based on individuals’ reminder intake) and vitamin B12 serum level.

ParametersNonexposed ()Exposed () valuea

Gender (n, %)
 Male19 (47.5)19 (47.5)>0.999b
 Female21 (52.5)21 (52.5)
Age ()45.6 ± 1.745.0 ± 1.80.797
 Male45.3 ± 2.644.5 ± 2.70.824
 Female45.8 ± 2.445.4 ± 2.50.891
c0.89070.8173
Years of work in tobacco fields ()28.3 ± 2.1
 Male029.8 ± 3.2
 Female026.8 ± 2.8
c0.4919
Body mass index (BMI)27.8 ± 0.827.6 ± 0.90.844
 Male27.2 ± 0.825.5 ± 0.80.120
 Female27.1 ± 1.028.4 ± 1.20.439
pc0.93600.1000
Dietary intake
 Lipids (%)d31.8 ± 1.230.4 ± 0.80.333
 Cholesterol (mg)247.1 ± 20.5339.1 ± 22.00.003
 Fibers (g)26.5 ± 1.024.8 ± 1.40.312
 Vitamin B6 (mg)1.86 ± 0.072.24 ± 0.110.006
 Folate (μg)177.5 ± 15.3180.3 ± 13.00.890
 Vitamin C (mg)91.5 ± 11.3124.2 ± 10.70.041
 Vitamin E (mg)34.8 ± 2.236.4 ± 2.80.666
 B-carotene (mg)474.2 ± 56.2724.5 ± 66.10.006
 A-retinol (μg)556.8 ± 52.5473.7 ± 34.30.362
Vitamin B12 (pg/mL)400.6 ± 18.2564.0 ± 33.70.0004

a value between nonexposed and exposed groups; bFischer’s exact test; c value between male and female individuals within each group; don a daily 2000 calorie diet. SE: standard error.