In this article (1), which was published in the December 2008 issue of Cancer Epidemiology, Biomarkers & Prevention, the percentages in Table 1 are incorrect. The corrected table follows.

Table 1.

Geometric mean concentrations, percentages of total EM, and rank order of 15 urinary estrogens and estrogen metabolites by menstrual/sex group

EMPremenopausal womenPostmenopausal womenMen
Follicular phase (n = 10)Luteal phase (n = 10)(n = 15)(n = 10)
Mean(%)RankMean(%)RankMean(%)RankMean(%)Rank
E1 7,064 18.0 3 7,694 17.5 2 1,507 15.9 3 1,753 17.2 2 
E2 3,623 9.2 4 5,234 11.9 4 758 8.0 5 1,028 10.1 4 
Catechol estrogens 
    2-OHE1 7,683 19.6 1 6,482 14.7 3 1,673 17.7 2 1,539 15.1 3 
    2-OHE2 1,264 3.2 10 1,294 2.9 10 434 4.6 8 356 3.5 7 
    4-OHE1 1,579 4.0 9 2,002 4.6 7 548 5.8 6 264 2.6 9 
16α pathway 
    16α-OHE1 2,115 5.4 7 1,971 4.5 8 290 3.1 10 257 2.5 10 
    17-epiE3 401 1.0 11 285 0.6 13 135 1.4 14 104 1.0 12 
    E3 7,319 18.6 2 10,177 23.2 1 1,844 19.5 1 2,675 26.2 1 
    16-ketoE 3,002 7.6 5 3,628 8.3 5 769 8.1 4 917 9.0 5 
    16-epiE3 2,310 5.9 6 1,940 4.4 9 416 4.4 9 756 7.4 6 
Methoxy estrogens 
    2-MeOE1 1,995 5.1 8 2,349 5.3 6 548 5.8 6 311 3.0 8 
    2-MeOE2 293 0.7 12 334 0.8 11 138 1.5 13 30 0.3 15 
    3-MeOE1 213 0.5 14 198 0.5 14 165 1.7 12 77 0.8 13 
    4-MeOE1 292 0.7 13 292 0.7 12 182 1.9 11 107 1.0 11 
    4-MeOE2* 94 0.2 15 81 0.2 15 66 0.7 15 41 0.4 14 
Total EM† 46,822   51,737   11,283   11,781   
EMPremenopausal womenPostmenopausal womenMen
Follicular phase (n = 10)Luteal phase (n = 10)(n = 15)(n = 10)
Mean(%)RankMean(%)RankMean(%)RankMean(%)Rank
E1 7,064 18.0 3 7,694 17.5 2 1,507 15.9 3 1,753 17.2 2 
E2 3,623 9.2 4 5,234 11.9 4 758 8.0 5 1,028 10.1 4 
Catechol estrogens 
    2-OHE1 7,683 19.6 1 6,482 14.7 3 1,673 17.7 2 1,539 15.1 3 
    2-OHE2 1,264 3.2 10 1,294 2.9 10 434 4.6 8 356 3.5 7 
    4-OHE1 1,579 4.0 9 2,002 4.6 7 548 5.8 6 264 2.6 9 
16α pathway 
    16α-OHE1 2,115 5.4 7 1,971 4.5 8 290 3.1 10 257 2.5 10 
    17-epiE3 401 1.0 11 285 0.6 13 135 1.4 14 104 1.0 12 
    E3 7,319 18.6 2 10,177 23.2 1 1,844 19.5 1 2,675 26.2 1 
    16-ketoE 3,002 7.6 5 3,628 8.3 5 769 8.1 4 917 9.0 5 
    16-epiE3 2,310 5.9 6 1,940 4.4 9 416 4.4 9 756 7.4 6 
Methoxy estrogens 
    2-MeOE1 1,995 5.1 8 2,349 5.3 6 548 5.8 6 311 3.0 8 
    2-MeOE2 293 0.7 12 334 0.8 11 138 1.5 13 30 0.3 15 
    3-MeOE1 213 0.5 14 198 0.5 14 165 1.7 12 77 0.8 13 
    4-MeOE1 292 0.7 13 292 0.7 12 182 1.9 11 107 1.0 11 
    4-MeOE2* 94 0.2 15 81 0.2 15 66 0.7 15 41 0.4 14 
Total EM† 46,822   51,737   11,283   11,781   

NOTE: Mean concentrations are expressed as pg EM/mg creatinine. The percentages of total EM were calculated from arithmetic means using actual measurement, not logarithmically transformed data. For each group, percentages sum to 100.

*4-MeOE2 concentrations were below the detection limit for three men.

†Geometric mean of total EM was not equal to the sum of the geometric means of individual EMs.

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1
Falk
 
RT
,
Xu
 
X
,
Keefer
 
L
,
Veenstra
 
TD
,
Ziegler
 
RG
. 
A liquid chromatography-mass spectrometry method for the simultaneous measurement of 15 urinary estrogens and estrogen metabolites: assay reproducibility and interindividual variability
.
Cancer Epidemiol Biomarkers Prev
 
2008
;
17
:
3411
–
8
.
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©2010 American Association for Cancer Research.
2010