In this article (Cancer Epidemiol Biomarkers Prev 2009;18:1003–6), which was published in the March 2009 issue of Cancer Epidemiology, Biomarkers & Prevention (1), the units of plasma folate in Table 2 were incorrectly printed as μg/mL. The correct units are ng/mL. A corrected table is shown below. The authors regret the error.

Table 2.

Associations between colorectal cancer risk and plasma folate and joint plasma folate and dietary intake in a nested case–control study from the Shanghai Women's Health Study

Plasma folate tertiles
T1 (low)T2T3
2.04–7.54 ng/mL7.55–11.09 ng/mL11.10–304.00 ng/mL
OR (95% CI)OR (95% CI)OR (95% CI)Ptrend
 Cases 96 95 112  
 Controls 396 396 396  
 OR (95% CI) 1.0 (ref) 1.0 (0.7–1.3) 1.2(0.8–1.7) 0.30 
Diet    Pinteraction 
Methionine 
 Low 1.0 (ref) 0.9 (0.6–1.4) 1.2 (0.8–1.9)  
 High 1.0 (0.6–1.6) 1.0 (0.6–1.6) 1.1 (0.7–1.9) 0.52 
Vitamin B12 
 Low 1.0 (ref) 0.9 (0.6–1.5) 1.1 (0.7–1.7)  
 High 0.9 (0.6–1.5) 0.9 (0.6–1.5) 1.2 (0.8–2.0) 0.69 
Vitamin B6 
 Low 1.0 (ref) 0.6 (0.4–1.0) 1.3 (0.8–2.0)  
 High 0.8 (0.5–1.3) 1.1 (0.7–1.8) 1.0 (0.6–1.6) 0.40 
Niacin (B3) 
 Low 1.0 (ref) 0.7 (0.4–1.1) 1.2 (0.7–1.8)  
 High 0.6 (0.4–1.0) 0.8 (0.5–1.3) 0.8 (0.5–1.3) 0.50 
Riboflavin (B2) 
 Low 1.0 (ref) 0.8 (0.5–1.3) 1.0 (0.7–1.6)  
 High 0.9 (0.5–1.5) 1.0 (0.6–1.6) 1.2 (0.7–2.0) 0.75 
Plasma folate tertiles
T1 (low)T2T3
2.04–7.54 ng/mL7.55–11.09 ng/mL11.10–304.00 ng/mL
OR (95% CI)OR (95% CI)OR (95% CI)Ptrend
 Cases 96 95 112  
 Controls 396 396 396  
 OR (95% CI) 1.0 (ref) 1.0 (0.7–1.3) 1.2(0.8–1.7) 0.30 
Diet    Pinteraction 
Methionine 
 Low 1.0 (ref) 0.9 (0.6–1.4) 1.2 (0.8–1.9)  
 High 1.0 (0.6–1.6) 1.0 (0.6–1.6) 1.1 (0.7–1.9) 0.52 
Vitamin B12 
 Low 1.0 (ref) 0.9 (0.6–1.5) 1.1 (0.7–1.7)  
 High 0.9 (0.6–1.5) 0.9 (0.6–1.5) 1.2 (0.8–2.0) 0.69 
Vitamin B6 
 Low 1.0 (ref) 0.6 (0.4–1.0) 1.3 (0.8–2.0)  
 High 0.8 (0.5–1.3) 1.1 (0.7–1.8) 1.0 (0.6–1.6) 0.40 
Niacin (B3) 
 Low 1.0 (ref) 0.7 (0.4–1.1) 1.2 (0.7–1.8)  
 High 0.6 (0.4–1.0) 0.8 (0.5–1.3) 0.8 (0.5–1.3) 0.50 
Riboflavin (B2) 
 Low 1.0 (ref) 0.8 (0.5–1.3) 1.0 (0.7–1.6)  
 High 0.9 (0.5–1.5) 1.0 (0.6–1.6) 1.2 (0.7–2.0) 0.75 

NOTE: Adjusted for age, educational attainment, baseline household income, smoking status, drinking status, physical activity, hormone replacement therapy, menopausal status, family history of colorectal cancer, body mass index, NSAID use, use of a vitamin B supplement, history of colorectal polyps, diabetes history, and daily intakes of energy, vegetables, fruits, red meats, and calcium.

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1.
Shrubsole
 
MJ
,
Yang
 
G
,
Gao
 
YT
,
Chow
 
WH
,
Shu
 
XO
,
Cai
 
Q
, et al 
Dietary B vitamin and methionine intakes and plasma folate are not associated with colorectal cancer risk in Chinese women
.
Cancer Epidemiol Biomarkers Prev
 
2009
;
18
:
1003
–
6
.
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©2012 American Association for Cancer Research.
2012