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Institute of Medicine (US) Standing Committee on the Scientific Evaluation of Dietary Reference Intakes and its Panel on Folate, Other B Vitamins, and Choline. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. Washington (DC): National Academies Press (US); 1998.

Cover of Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline

Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline.

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KBlood Concentrations of Folate and Vitamin B12 from the Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994

TABLE K-1Serum Folate (ng/mL) of Persons Aged 4 Years and Older: Mean and Selected Percentiles, United States, 1988–1994

Gender and Age (y)Number of Examined PersonsMeanStandard Error of the MeanSelected Percentiles
5th10th15th25th50th75th85th90th95th
Both, 4–83,12811.00.34.45.35.96.99.412.814.916.921.8
M, 9–131,1299.00.33.44.04.85.67.710.912.815.318.1
M, 14–188656.00.42.32.62.93.44.77.48.710.513.2
M, 19–301,8565.00.11.82.22.52.94.06.27.78.711.1
Males, 31–502,4935.70.21.92.32.73.24.67.19.210.512.8
M, 51–701,9877.40.22.22.73.03.75.79.312.014.317.8
M, >701,3709.00.32.33.13.64.56.911.115.317.921.7
F, 9–131,1498.20.33.13.84.04.96.810.311.613.917.8
F, 14–189365.70.22.12.52.73.24.97.28.79.712.1
F, 19–301,9155.80.21.82.32.53.14.67.29.010.513.1
F, 31–502,9296.50.21.92.32.73.34.98.210.612.416.0
F, 51–702,0878.90.32.42.93.34.26.611.414.617.022.2
F, >701,53410.70.42.93.64.05.18.013.717.520.626.6
Pregnant F, 14–5532710.50.82.7a3.43.74.78.413.916.618.520.5a
Both, ≥4, unadjusted23,7057.20.12.12.52.93.65.59.011.413.517.2

NOTE: Values have been adjusted by following recommendations in Life Sciences Research Office/Federation of American Societies for Experimental Biology. 1994. Assessment of the Folate Methodology Used in the Third National Health and Nutrition Examination Survey (NHANES III, 1988–1994). Raiten DJ, Fisher KD, eds. Bethesda, MD: LSRO/FASEB. Values are presented as received from source.

a

Value does not meet standard of reliability or precision.

SOURCE: NHANES III, 1988–1994, unpublished data, C.L. Johnson and J.D. Wright, National Center for Health Statistics, Centers for Disease Control and Prevention, 1997.

TABLE K-2Erythrocyte Folate (ng/mL) of Persons Aged 4 Years and Older: Mean and Selected Percentiles, United States, 1988–1994

Gender and Age (y)Number of Examined PersonsMeanStandard Error of the MeanSelected Percentiles
5th10th15th25th50th75th85th90th95th
Both, 4–83,15722212.6123140151170212258289312359
M, 9–131,1372024.2102116129149190242280306342
M, 14–188641644.48394101116149197237261301
M, 19–301,8531642.88495107119151192219244300
M, 31–502,4841823.086102112127166217255282335
M, 51–701,9682164.593108120139188269318353425
M, >701,2662427.393113125149207305362419471
F, 9–131,1451753.487104113129167216239260288
F, 14–189341574.0778998115141190221240269
F, 19–301,9171683.3778897116149206242270315
F, 31–502,9241943.48497107125172239286324369
F, 51–702,0592385.595113128149206296356408462
F, >701,3742597.396116133160228325391432519
Pregnant F, 14–5532226112.5114a123140164248344379429461a
Both, ≥4, unadjusted23,4041971.287101113130175238284319380

NOTE: Values have been adjusted by following recommendations in Life Sciences Research Office/Federation of American Societies for Experimental Biology. 1994. Assessment of the Folate Methodology Used in the Third National Health and Nutrition Examination Survey (NHANES III, 1988–1994). Raiten DJ, Fisher KD, eds. Bethesda, MD: LSRO/FASEB. Values are presented as received from source.

a

Value does not meet standard of reliability or precision.

SOURCE: NHANES III, 1988–1994, unpublished data, C.L. Johnson and J.D. Wright, National Center for Health Statistics, Centers for Disease Control and Prevention, 1997.

TABLE K-3Serum Vitamin B12 (pg/mL) of Persons Aged 4 Years and Older: Mean and Selected Percentiles, United States, 1991–1994

Gender and Age (y)Number of Examined PersonsMeanStandard Error of the MeanSelected Percentiles
5th10th15th25th50th75th85th90th95th
Both, 4–81,51978113.24094745175697209091,0341,1031,270
M, 9–1355062012.7344379420470590746825868947
M, 14–1845851614.0261335344395485589656767871
M, 19–308914708.1251281312355466550623666762
M, 31–501,2014738.4236287305348436556633681803
M, 51–7093746023.7190247273317414540630688884
M, >7061444921.0187218239298382512629719881
F, 9–1359561213.63443834014535696947948801,060
F, 14–1849650914.6276300319362460618733791871
F, 19–301,04947942.1214250277328437580669721805
F, 31–501,63949742.8223262287332427589666729827
F, 51–701,07850412.7224266291344465605698769919
F, >7082453666.1186232261315436622718795953
Pregnant F, 14–5517342653.1232a246255293421501549579631a
Both, ≥4, unadjusted12,0245179.0233274303351466615707790924

NOTE: Values are presented as received from source.

a

Value does not meet standard of reliability or precision.

SOURCE: NHANES III, 1988–1994, unpublished data, C.L. Johnson and J.D. Wright, National Center for Health Statistics, Centers for Disease Control and Prevention, 1997.

TABLE K-4Serum Homocysteine (μmol/L) of Persons Aged 12 Years and Older: Mean and Selected Percentiles, United States, 1991–1994

Gender and Age (y)Number of Examined PersonsMeanStandard Error of the MeanSelected Percentiles
5th10th15th25th50th75th85th90th95th
M, 12–131776.610.203.90a4.404.805.3016.507.708.598.619.51a
M, 14–183958.390.344.805.405.606.207.409.019.8111.6015.30
M, 19–3081610.290.265.706.406.807.609.2011.2012.9013.9017.53
M, 31–501,0559.930.206.006.406.807.709.0010.8912.6013.9016.38
M, 51–7082111.940.496.407.407.808.5110.2012.8913.9015.3018.38
M, >7050213.400.496.807.908.409.3112.1115.7017.7219.0122.70
F, 12–132266.190.223.40a3.704.304.705.807.207.918.519.51a
F, 14–184487.080.193.504.204.905.606.507.909.019.9012.10
F, 19–309388.050.154.705.105.405.907.209.4011.1012.2014.09
F, 31–501,4468.360.164.505.095.506.107.509.2010.9112.4014.30
F, 51–709379.680.195.205.706.307.408.9011.0112.8014.1016.01
F, >7068111.830.366.407.017.508.4010.6113.4015.3117.3020.53
Pregnant F, 14–551435.410.362.80a2.80a3.503.504.906.407.307.80a9.30a
Both, ≥12, unadjusted8,5859.510.094.905.506.006.708.5110.8112.6013.9016.51
a

Value does not meet standard of reliability or precision.

SOURCE: NHANES III, 1988–1994, unpublished data, C.L. Johnson and J.D. Wright, National Center for Health Statistics, Centers for Disease Control and Prevention, 1997.

Copyright © 1998, National Academy of Sciences.
Bookshelf ID: NBK114300

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