Estimating pesticide dose from urinary pesticide concentration data by creatinine correction in the third national health and nutrition examination survey (nhanes-iii)

Estimating pesticide dose from urinary pesticide concentration data by creatinine correction in the third national health and nutrition examination survey (nhanes-iii)

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ABSTRACT The Third National Health and Nutrition Examination Survey (NHANES-III) of the Centers for Disease Control and Prevention (CDC) recorded data on the urinary concentrations of 12 chemicals (analytes), which were either pesticides or their metabolites, that represent exposure to certain pesticides, in urine samples collected from 1988 to 1994 from a cohort of 978 volunteer subjects, aged 20–59 years. We have used each subject's urinary creatinine concentration and their individual daily creatinine excretion rate (g/day) computed from their age, gender, height and weight, to estimate their daily excretion rate in _μ_g analyte/kg/day. We discuss the mechanisms of excretion of the analytes and certain assumptions needed to compute the equivalent daily dietary intake (_μ_g/kg/day) of the most likely parent pesticide compounds for each excreted analyte. We used literature data on the average amount of parent compound ingested per unit amount of the analyte excreted in the urine, and compared these estimated daily intakes to the US EPA's reference dose (RfD) values for each of those parent pesticides. A Johnson SB distribution (four-parameter lognormal) was fit to these data to estimate the national distribution of exclusive exposures to these 12 parent compounds. Only three such pesticides had a few predicted values above their RfD (lindane 1.6%; 2,4-dichlorophenol 1.3%; chlorpyrifos 0.02%). Given the possibility of a subject's dietary intake of a pesticide's metabolites incorporated into treated food, our results show that few, if any, individuals in the general US population aged 20–59 years and not employed in pesticide application were likely to have exceeded the USEPA RfD for these parent compounds during the years studied. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 6 print issues and online access $259.00 per year only $43.17 per issue Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS PREDICTORS OF URINARY BIOMARKER CONCENTRATIONS OF PHTHALATES AND SOME OF THEIR REPLACEMENTS IN CHILDREN IN THE PROJECT VIVA COHORT Article 23 December 2022 DETERMINANTS OF URINARY DIALKYL PHOSPHATE METABOLITES IN MIDLIFE WOMEN: THE STUDY OF WOMEN’S HEALTH ACROSS THE NATION MULTI-POLLUTANT STUDY (SWAN-MPS) Article 08 May 2024 BAYESIAN INFERENCE OF CHEMICAL EXPOSURES FROM NHANES URINE BIOMONITORING DATA Article 17 August 2022 NOTES * where 1.93=(1440 min/day)(1000 _μ_g/mg)/(72 year-kg/[mg/dl-ml/min-1.73 m2])(3600 cm-kg/m4)0.5 (1.73 m2)(100 ml/dl) ABBREVIATIONS * 1NAP: 1-naphthol * 2NAP: 2-naphthol * 24D: 2,4-dichlorophenoxyacetic acid * 24DB: 2,4-dichlorophenoxybutyric acid * 24DCP: 2,4-dichlorophenol * 245TCP: 2,4,5-trichlorophenol * 246TCP: 2,4,6-trichlorophenol * 25DCP: 2,5-dichlorophenol * 4NP: 4-nitrophenol * BSA: body surface area * CDC: Centers for disease control and prevention * CFP: carbofuranphenol * Cn: creatinine * CnCl: creatinine clearance * EPN: O-ethyl O-_p_-nitrophenyl phenylphosphonothioate * IPP: 2-isopropoxyphenol * MDL: minimum detectable level * MLE: method of maximum likelihood estimation * NCEH: National Center for Environmental Health * NCHS: National Center for Health Statistics * NHANES-III: The Third National Health and Nutrition Examination Survey * PCP: pentachlorophenol * RfD: reference dose * TCPY: 3,5,6-trichloro-2-pyridinol * Tm: transport maximum * USDHHS: US Department of Health and Human Services * US EPA: US Environmental Protection Agency REFERENCES * Adgate J.L., Barr D.B., Clayton C.A., Eberly L.E., Freeman N.C., Lioy P.J., Needham L.L., Pellissari E.D., Quackenboss J.J., Roy A., and Sexton K. Measurement of children's exposure to pesticides: analysis of urinary metabolite levels in a probability-based sample. _Environ Health Perspect_ 2001: 109: 583–590. Article  CAS  Google Scholar  * Alessio L., Berlin A., Dell'Orto A., Toffoletto F., and Ghezzi I. Reliability of urinary creatinine as a parameter to adjust values of urinary biological indicators. _Int Arch Occup Environ Health_ 1985: 55: 99–106. Article  CAS  Google Scholar  * Araki S. Effects of urinary volume on urinary concentration of lead, aminolaevulinic acid, coproporphyrin, creatinine, and total solutes. _Br J Ind Med_ 1980: 62: 471–477. Google Scholar  * Bennett S., and Wilkins H.A. Within-person variation in urinary sodium, potassium and creatinine concentrations, and their relationship to changes in the blood pressure. _J Trop Med Hyg_ 1993: 96: 267–273. CAS  PubMed  Google Scholar  * Berkhin E.B., and Humphreys M.H. Regulation of renal tubular secretion of organic compounds. _Kidney Int_ 2001: 59: 17–30. Article  CAS  Google Scholar  * Bingham S.A., and Cummings J.H. The use of creatinine output as a check on the completeness of 24-hour urine collections. _Hum Nutr Clin Nutr_ 1985: 39: 343–353. CAS  PubMed  Google Scholar  * Buck R.J., Özkaynak H., Xue J., Zartarian V.G., and Hammerstrom K. Modeled estimates of chlorpyrifos exposure and dose for the Minnesota and Arizona NHEXAS populations. _J Expos Anal Environ Epidemiol_ 2001: 11: 253–268. Article  CAS  Google Scholar  * Cho M.M., and Yi M.M. Variability of daily creatinine excretion in healthy adults. _Hum Nutr Clin Nutr_ 1986: 40: 469–472. CAS  PubMed  Google Scholar  * Cockcroft D.W., and Gault M.H. Prediction of creatinine clearance from serum creatinine. _Nephron_ 1976: 16: 31–41. Article  CAS  Google Scholar  * Dell'Orto A., Berlin A., Toffoletto F., Losito B., and Alessio L. Creatinine and specific gravity adjustment of ALA in urinary spot samples: is there any need? _Am Ind Hyg Assoc J_ 1987: 48: A331–A332. CAS  PubMed  Google Scholar  * Greenblatt D.J., Ransil B.J., Harmatz J.S., Smith T.W., Duhme D.W., and Koch-Weser J. Variability of 24-hour urinary creatinine excretion by normal subjects. _J Clin Pharmacol_ 1976: 16: 321–328. Article  CAS  Google Scholar  * Hill Jr R.H., Shealy D.B., Head S.L., Williams C.C., Bailey S.L., Gregg M., and Needham. L.L. Pesticide residues in urine of adults living in the United States: reference range concentrations. _Environ Res_ 1995: 71: 99–108. Article  CAS  Google Scholar  * Johnson N.L. Systems of frequency curves generated by methods of translation. _Biometrika_ 1949: 36: 149–172. Article  CAS  Google Scholar  * Mage D.T. An explicit solution for SB parameters using four percentile points. _Technometrics_ 1980: 22: 247–251. Google Scholar  * Mosteller R.D. Simplified calculation of body surface area. _New Engl J Med_ 1987: 317: 1098 (letter). CAS  PubMed  Google Scholar  * Neithardt A.B., Dooley S.L., and Borensztajn J. Prediction of 24-hour protein excretion in pregnancy with a single voided urine protein-to-creatinine ratio. _Am J Obst Gyn_ 2002: 186: 883–886. Article  CAS  Google Scholar  * Nolan R.J., Rick D.L., Freshour N.L., and Saunders J.H. Chlorpyrifos: pharmacokinetics in human volunteers. _Toxicol Appl Pharm._ 1984: 73: 8–15. Article  CAS  Google Scholar  * Radha E., and Bessman S.P. Effect of exercise on protein degradation: 3-methylhistidine and creatinine excretion. _Biochem Med_ 1983: 29: 96–100. Article  CAS  Google Scholar  * Sata F., Araki S., Yokoyama K., and Murata K. Adjustment of creatinine-adjusted values in urine to urinary flow rate: a study of eleven heavy metals and organic substances. _Int Arch Occup Environ Health_ 1995: 68: 64–68. Article  CAS  Google Scholar  * Schwartz G.J., Brion L.P., and Spitzer A. The use of plasma creatinine concentration for estimating glomerular filtration rate in infants, children and adolescents. _Pediatr Clin North Am_ 1987: 34: 571–590. Article  CAS  Google Scholar  * Shull B.C., Haughey D., Koup J.R., Baliah T., and Li P.K. A useful method for predicting creatinine clearance in children. _Clin Chem_ 1978: 24: 1167–1169. CAS  PubMed  Google Scholar  * Trevisan A. Concentration adjustment of spot samples in analysis of urinary xenobiotic metabolites. _Am J Ind Med_ 1990: 17: 637–642. Article  CAS  Google Scholar  * US Department of Health and Human Services (DHHS). National Center for Health Statistics. Third National Health and Nutrition Examination Survey, 1988–1994, NHANES III Priority Toxicant Reference Range Study Data File (3.5 Diskette, Series 11, No. 4A), Centers for Disease Control and Prevention, Hyattsville, MD, 1999. * USEPA. Ambient Water Quality Criteria Document: Chlorinated Phenols p. A-7 EPA 440/5-80-032, Washington, DC, 1980. * Vij H.S., and Howell S. Improving the specific gravity adjustment method for assessing urinary concentrations of toxic substances. _Am Ind Hyg Assoc J_ 1998: 59: 375–380. Article  CAS  Google Scholar  * Waterlow J.C. Observations on the variability of creatinine excretion. _Hum Nutr Clin Nutr_ 1986: 40: 125–129. CAS  PubMed  Google Scholar  * Wilson N.K., Chuang J.C., Lyu C., Menton R., and Morgan M.K. Aggregate exposures of nine preschool children to persistent organic pollutants at day care and at home. _J Expos Anal Environ Epidemiol_ 2003: 13: 187–202. Article  CAS  Google Scholar  Download references ACKNOWLEDGEMENTS This work was supported under USEPA Contract 401893671 - DAI to Temple University. Jennifer Weil, MD, of Temple University and David J. Miller, Carol Christensen and Peter Egeghy of US EPA provided technical review. The views expressed are those of the authors, and they do not represent US EPA policy. AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Temple University, Philadelphia, PA, USA David T Mage, Gauthami Gondy & Woollcott Smith * US Environmental Protection Agency, Arlington, VA, USA Ruth H Allen * Centers for Disease Control and Prevention, National Center for Environmental Health, Atlanta, GA, USA Dana B Barr & Larry L Needham Authors * David T Mage View author publications You can also search for this author inPubMed Google Scholar * Ruth H Allen View author publications You can also search for this author inPubMed Google Scholar * Gauthami Gondy View author publications You can also search for this author inPubMed Google Scholar * Woollcott Smith View author publications You can also search for this author inPubMed Google Scholar * Dana B Barr View author publications You can also search for this author inPubMed Google Scholar * Larry L Needham View author publications You can also search for this author inPubMed Google Scholar CORRESPONDING AUTHOR Correspondence to David T Mage. RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Mage, D., Allen, R., Gondy, G. _et al._ Estimating pesticide dose from urinary pesticide concentration data by creatinine correction in the Third National Health and Nutrition Examination Survey (NHANES-III). _J Expo Sci Environ Epidemiol_ 14, 457–465 (2004). https://doi.org/10.1038/sj.jea.7500343 Download citation * Published: 15 September 2004 * Issue Date: 01 November 2004 * DOI: https://doi.org/10.1038/sj.jea.7500343 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative KEYWORDS * _creatinine correction_ * _S_ _B_ _ model_ * _reference dose_ * _transport maximum_ * _NHANES-III_.

ABSTRACT The Third National Health and Nutrition Examination Survey (NHANES-III) of the Centers for Disease Control and Prevention (CDC) recorded data on the urinary concentrations of 12


chemicals (analytes), which were either pesticides or their metabolites, that represent exposure to certain pesticides, in urine samples collected from 1988 to 1994 from a cohort of 978


volunteer subjects, aged 20–59 years. We have used each subject's urinary creatinine concentration and their individual daily creatinine excretion rate (g/day) computed from their age,


gender, height and weight, to estimate their daily excretion rate in _μ_g analyte/kg/day. We discuss the mechanisms of excretion of the analytes and certain assumptions needed to compute the


equivalent daily dietary intake (_μ_g/kg/day) of the most likely parent pesticide compounds for each excreted analyte. We used literature data on the average amount of parent compound


ingested per unit amount of the analyte excreted in the urine, and compared these estimated daily intakes to the US EPA's reference dose (RfD) values for each of those parent


pesticides. A Johnson SB distribution (four-parameter lognormal) was fit to these data to estimate the national distribution of exclusive exposures to these 12 parent compounds. Only three


such pesticides had a few predicted values above their RfD (lindane 1.6%; 2,4-dichlorophenol 1.3%; chlorpyrifos 0.02%). Given the possibility of a subject's dietary intake of a


pesticide's metabolites incorporated into treated food, our results show that few, if any, individuals in the general US population aged 20–59 years and not employed in pesticide


application were likely to have exceeded the USEPA RfD for these parent compounds during the years studied. Access through your institution Buy or subscribe This is a preview of subscription


content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 6 print issues and online access $259.00 per year only $43.17 per issue


Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL


ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS PREDICTORS OF URINARY BIOMARKER


CONCENTRATIONS OF PHTHALATES AND SOME OF THEIR REPLACEMENTS IN CHILDREN IN THE PROJECT VIVA COHORT Article 23 December 2022 DETERMINANTS OF URINARY DIALKYL PHOSPHATE METABOLITES IN MIDLIFE


WOMEN: THE STUDY OF WOMEN’S HEALTH ACROSS THE NATION MULTI-POLLUTANT STUDY (SWAN-MPS) Article 08 May 2024 BAYESIAN INFERENCE OF CHEMICAL EXPOSURES FROM NHANES URINE BIOMONITORING DATA


Article 17 August 2022 NOTES * where 1.93=(1440 min/day)(1000 _μ_g/mg)/(72 year-kg/[mg/dl-ml/min-1.73 m2])(3600 cm-kg/m4)0.5 (1.73 m2)(100 ml/dl) ABBREVIATIONS * 1NAP: 1-naphthol * 2NAP:


2-naphthol * 24D: 2,4-dichlorophenoxyacetic acid * 24DB: 2,4-dichlorophenoxybutyric acid * 24DCP: 2,4-dichlorophenol * 245TCP: 2,4,5-trichlorophenol * 246TCP: 2,4,6-trichlorophenol * 25DCP:


2,5-dichlorophenol * 4NP: 4-nitrophenol * BSA: body surface area * CDC: Centers for disease control and prevention * CFP: carbofuranphenol * Cn: creatinine * CnCl: creatinine clearance *


EPN: O-ethyl O-_p_-nitrophenyl phenylphosphonothioate * IPP: 2-isopropoxyphenol * MDL: minimum detectable level * MLE: method of maximum likelihood estimation * NCEH: National Center for


Environmental Health * NCHS: National Center for Health Statistics * NHANES-III: The Third National Health and Nutrition Examination Survey * PCP: pentachlorophenol * RfD: reference dose *


TCPY: 3,5,6-trichloro-2-pyridinol * Tm: transport maximum * USDHHS: US Department of Health and Human Services * US EPA: US Environmental Protection Agency REFERENCES * Adgate J.L., Barr


D.B., Clayton C.A., Eberly L.E., Freeman N.C., Lioy P.J., Needham L.L., Pellissari E.D., Quackenboss J.J., Roy A., and Sexton K. Measurement of children's exposure to pesticides:


analysis of urinary metabolite levels in a probability-based sample. _Environ Health Perspect_ 2001: 109: 583–590. Article  CAS  Google Scholar  * Alessio L., Berlin A., Dell'Orto A.,


Toffoletto F., and Ghezzi I. Reliability of urinary creatinine as a parameter to adjust values of urinary biological indicators. _Int Arch Occup Environ Health_ 1985: 55: 99–106. Article 


CAS  Google Scholar  * Araki S. Effects of urinary volume on urinary concentration of lead, aminolaevulinic acid, coproporphyrin, creatinine, and total solutes. _Br J Ind Med_ 1980: 62:


471–477. Google Scholar  * Bennett S., and Wilkins H.A. Within-person variation in urinary sodium, potassium and creatinine concentrations, and their relationship to changes in the blood


pressure. _J Trop Med Hyg_ 1993: 96: 267–273. CAS  PubMed  Google Scholar  * Berkhin E.B., and Humphreys M.H. Regulation of renal tubular secretion of organic compounds. _Kidney Int_ 2001:


59: 17–30. Article  CAS  Google Scholar  * Bingham S.A., and Cummings J.H. The use of creatinine output as a check on the completeness of 24-hour urine collections. _Hum Nutr Clin Nutr_


1985: 39: 343–353. CAS  PubMed  Google Scholar  * Buck R.J., Özkaynak H., Xue J., Zartarian V.G., and Hammerstrom K. Modeled estimates of chlorpyrifos exposure and dose for the Minnesota and


Arizona NHEXAS populations. _J Expos Anal Environ Epidemiol_ 2001: 11: 253–268. Article  CAS  Google Scholar  * Cho M.M., and Yi M.M. Variability of daily creatinine excretion in healthy


adults. _Hum Nutr Clin Nutr_ 1986: 40: 469–472. CAS  PubMed  Google Scholar  * Cockcroft D.W., and Gault M.H. Prediction of creatinine clearance from serum creatinine. _Nephron_ 1976: 16:


31–41. Article  CAS  Google Scholar  * Dell'Orto A., Berlin A., Toffoletto F., Losito B., and Alessio L. Creatinine and specific gravity adjustment of ALA in urinary spot samples: is


there any need? _Am Ind Hyg Assoc J_ 1987: 48: A331–A332. CAS  PubMed  Google Scholar  * Greenblatt D.J., Ransil B.J., Harmatz J.S., Smith T.W., Duhme D.W., and Koch-Weser J. Variability of


24-hour urinary creatinine excretion by normal subjects. _J Clin Pharmacol_ 1976: 16: 321–328. Article  CAS  Google Scholar  * Hill Jr R.H., Shealy D.B., Head S.L., Williams C.C., Bailey


S.L., Gregg M., and Needham. L.L. Pesticide residues in urine of adults living in the United States: reference range concentrations. _Environ Res_ 1995: 71: 99–108. Article  CAS  Google


Scholar  * Johnson N.L. Systems of frequency curves generated by methods of translation. _Biometrika_ 1949: 36: 149–172. Article  CAS  Google Scholar  * Mage D.T. An explicit solution for SB


parameters using four percentile points. _Technometrics_ 1980: 22: 247–251. Google Scholar  * Mosteller R.D. Simplified calculation of body surface area. _New Engl J Med_ 1987: 317: 1098


(letter). CAS  PubMed  Google Scholar  * Neithardt A.B., Dooley S.L., and Borensztajn J. Prediction of 24-hour protein excretion in pregnancy with a single voided urine protein-to-creatinine


ratio. _Am J Obst Gyn_ 2002: 186: 883–886. Article  CAS  Google Scholar  * Nolan R.J., Rick D.L., Freshour N.L., and Saunders J.H. Chlorpyrifos: pharmacokinetics in human volunteers.


_Toxicol Appl Pharm._ 1984: 73: 8–15. Article  CAS  Google Scholar  * Radha E., and Bessman S.P. Effect of exercise on protein degradation: 3-methylhistidine and creatinine excretion.


_Biochem Med_ 1983: 29: 96–100. Article  CAS  Google Scholar  * Sata F., Araki S., Yokoyama K., and Murata K. Adjustment of creatinine-adjusted values in urine to urinary flow rate: a study


of eleven heavy metals and organic substances. _Int Arch Occup Environ Health_ 1995: 68: 64–68. Article  CAS  Google Scholar  * Schwartz G.J., Brion L.P., and Spitzer A. The use of plasma


creatinine concentration for estimating glomerular filtration rate in infants, children and adolescents. _Pediatr Clin North Am_ 1987: 34: 571–590. Article  CAS  Google Scholar  * Shull


B.C., Haughey D., Koup J.R., Baliah T., and Li P.K. A useful method for predicting creatinine clearance in children. _Clin Chem_ 1978: 24: 1167–1169. CAS  PubMed  Google Scholar  * Trevisan


A. Concentration adjustment of spot samples in analysis of urinary xenobiotic metabolites. _Am J Ind Med_ 1990: 17: 637–642. Article  CAS  Google Scholar  * US Department of Health and Human


Services (DHHS). National Center for Health Statistics. Third National Health and Nutrition Examination Survey, 1988–1994, NHANES III Priority Toxicant Reference Range Study Data File (3.5


Diskette, Series 11, No. 4A), Centers for Disease Control and Prevention, Hyattsville, MD, 1999. * USEPA. Ambient Water Quality Criteria Document: Chlorinated Phenols p. A-7 EPA


440/5-80-032, Washington, DC, 1980. * Vij H.S., and Howell S. Improving the specific gravity adjustment method for assessing urinary concentrations of toxic substances. _Am Ind Hyg Assoc J_


1998: 59: 375–380. Article  CAS  Google Scholar  * Waterlow J.C. Observations on the variability of creatinine excretion. _Hum Nutr Clin Nutr_ 1986: 40: 125–129. CAS  PubMed  Google Scholar


  * Wilson N.K., Chuang J.C., Lyu C., Menton R., and Morgan M.K. Aggregate exposures of nine preschool children to persistent organic pollutants at day care and at home. _J Expos Anal


Environ Epidemiol_ 2003: 13: 187–202. Article  CAS  Google Scholar  Download references ACKNOWLEDGEMENTS This work was supported under USEPA Contract 401893671 - DAI to Temple University.


Jennifer Weil, MD, of Temple University and David J. Miller, Carol Christensen and Peter Egeghy of US EPA provided technical review. The views expressed are those of the authors, and they do


not represent US EPA policy. AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Temple University, Philadelphia, PA, USA David T Mage, Gauthami Gondy & Woollcott Smith * US Environmental


Protection Agency, Arlington, VA, USA Ruth H Allen * Centers for Disease Control and Prevention, National Center for Environmental Health, Atlanta, GA, USA Dana B Barr & Larry L Needham


Authors * David T Mage View author publications You can also search for this author inPubMed Google Scholar * Ruth H Allen View author publications You can also search for this author


inPubMed Google Scholar * Gauthami Gondy View author publications You can also search for this author inPubMed Google Scholar * Woollcott Smith View author publications You can also search


for this author inPubMed Google Scholar * Dana B Barr View author publications You can also search for this author inPubMed Google Scholar * Larry L Needham View author publications You can


also search for this author inPubMed Google Scholar CORRESPONDING AUTHOR Correspondence to David T Mage. RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE


Mage, D., Allen, R., Gondy, G. _et al._ Estimating pesticide dose from urinary pesticide concentration data by creatinine correction in the Third National Health and Nutrition Examination


Survey (NHANES-III). _J Expo Sci Environ Epidemiol_ 14, 457–465 (2004). https://doi.org/10.1038/sj.jea.7500343 Download citation * Published: 15 September 2004 * Issue Date: 01 November 2004


* DOI: https://doi.org/10.1038/sj.jea.7500343 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is


not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative KEYWORDS * _creatinine correction_ * _S_ _B_ _ model_ *


_reference dose_ * _transport maximum_ * _NHANES-III_.