Table 4.

Demographics, lifestyle factors, and plasma concentrations of folate and vitamin B12 by the degree of HPV 16m among non-cases

HPV 16m (%)
Risk factors<11.5≥11.5P
Age, y<2356 (51%)46 (40%)0.08
≥2353 (49%)70 (60%)
RaceCaucasian American66 (61%)63 (54%)0.34
African American43 (39%)53 (46%)
EducationHigh school education or higher80 (75%)85 (75%)0.97
Less than high school education26 (25%)28 (25%)
Waist circumference, cm≤8855 (53%)62 (55%)0.77
>8849 (47%)51 (45%)
Smoking statusNever smokers41 (38%)52 (46%)0.23
Ever smokers68 (62%)62 (54%)
Use of hormonal contraceptivesNon-user14 (13%)20 (18%)0.37
User91 (87%)93 (82%)
Median plasma folate, ng/mL13.4616.170.02
Median plasma vitamin B12, pg/mL387.23458.730.05