Walter F Stewart

Summary

Affiliation: Johns Hopkins Bloomberg School of Public Health
Country: USA

Publications

  1. ncbi request reprint Prevalence and burden of overactive bladder in the United States
    W F Stewart
    Department of Epidemiology, Johns Hopkins University, 615 North Wolfe Street, Room 6039E, Baltimore, MD 21205, USA
    World J Urol 20:327-36. 2003
  2. pmc ApoE genotype, past adult lead exposure, and neurobehavioral function
    Walter F Stewart
    Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205, USA
    Environ Health Perspect 110:501-5. 2002
  3. pmc Evaluation of cumulative lead dose and longitudinal changes in structural magnetic resonance imaging in former organolead workers
    Brian S Schwartz
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    J Occup Environ Med 52:407-14. 2010
  4. pmc Associations of renal function with polymorphisms in the delta-aminolevulinic acid dehydratase, vitamin D receptor, and nitric oxide synthase genes in Korean lead workers
    Virginia M Weaver
    Division of Occupational and Environmental Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
    Environ Health Perspect 111:1613-9. 2003
  5. ncbi request reprint The longitudinal association of lead with blood pressure
    Barbara S Glenn
    Kennedy Krieger Institute, Department of Neurology, Johns Hopkins School of Hygiene and Public Health, Baltimore, MD 21205, USA
    Epidemiology 14:30-6. 2003
  6. ncbi request reprint Relation of alleles of the sodium-potassium adenosine triphosphatase alpha 2 gene with blood pressure and lead exposure
    B S Glenn
    Department of Neurology, Kennedy Krieger Research Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
    Am J Epidemiol 153:537-45. 2001
  7. pmc Associations of lead biomarkers with renal function in Korean lead workers
    V M Weaver
    Division of Occupational and Environmental Health, Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
    Occup Environ Med 60:551-62. 2003
  8. pmc Disparities in cognitive functioning by race/ethnicity in the Baltimore Memory Study
    Brian S Schwartz
    Department of Environmental Health Sciences, Division of Occupational and Environmental Health, Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, USA
    Environ Health Perspect 112:314-20. 2004
  9. pmc Relations of brain volumes with cognitive function in males 45 years and older with past lead exposure
    Brian S Schwartz
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Neuroimage 37:633-41. 2007
  10. ncbi request reprint Lead and cognitive function in adults: a questions and answers approach to a review of the evidence for cause, treatment, and prevention
    Brian S Schwartz
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
    Int Rev Psychiatry 19:671-92. 2007

Detail Information

Publications52

  1. ncbi request reprint Prevalence and burden of overactive bladder in the United States
    W F Stewart
    Department of Epidemiology, Johns Hopkins University, 615 North Wolfe Street, Room 6039E, Baltimore, MD 21205, USA
    World J Urol 20:327-36. 2003
    ..the National Overactive BLadder Evaluation (NOBLE) Program was initiated to better understand the prevalence and burden of overactive bladder in a broad spectrum of the United States population...
  2. pmc ApoE genotype, past adult lead exposure, and neurobehavioral function
    Walter F Stewart
    Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205, USA
    Environ Health Perspect 110:501-5. 2002
    ..In particular, the persistent CNS effect of lead may be more toxic in individuals who have at least one ApoE-Epsilon4 allele...
  3. pmc Evaluation of cumulative lead dose and longitudinal changes in structural magnetic resonance imaging in former organolead workers
    Brian S Schwartz
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    J Occup Environ Med 52:407-14. 2010
    ....
  4. pmc Associations of renal function with polymorphisms in the delta-aminolevulinic acid dehydratase, vitamin D receptor, and nitric oxide synthase genes in Korean lead workers
    Virginia M Weaver
    Division of Occupational and Environmental Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
    Environ Health Perspect 111:1613-9. 2003
    ..08). No significant differences were seen in renal outcomes by VDR genotype, nor was consistent effect modification observed. The ALAD findings could be explained by lead-induced hyperfiltration...
  5. ncbi request reprint The longitudinal association of lead with blood pressure
    Barbara S Glenn
    Kennedy Krieger Institute, Department of Neurology, Johns Hopkins School of Hygiene and Public Health, Baltimore, MD 21205, USA
    Epidemiology 14:30-6. 2003
    ..Several investigators have reported an association of blood lead or bone lead with increased blood pressure and hypertension, but questions remain concerning whether these effects are acute or chronic in nature...
  6. ncbi request reprint Relation of alleles of the sodium-potassium adenosine triphosphatase alpha 2 gene with blood pressure and lead exposure
    B S Glenn
    Department of Neurology, Kennedy Krieger Research Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
    Am J Epidemiol 153:537-45. 2001
    ..However, because the number of subjects (especially African Americans) with the susceptible genotype in this study was small, these observations should be considered preliminary...
  7. pmc Associations of lead biomarkers with renal function in Korean lead workers
    V M Weaver
    Division of Occupational and Environmental Health, Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
    Occup Environ Med 60:551-62. 2003
    ..To compare associations of lead biomarkers with renal function in current and former lead workers...
  8. pmc Disparities in cognitive functioning by race/ethnicity in the Baltimore Memory Study
    Brian S Schwartz
    Department of Environmental Health Sciences, Division of Occupational and Environmental Health, Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, USA
    Environ Health Perspect 112:314-20. 2004
    ....
  9. pmc Relations of brain volumes with cognitive function in males 45 years and older with past lead exposure
    Brian S Schwartz
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Neuroimage 37:633-41. 2007
    ..In this cohort, an interesting group in which to examine structure-function relations, this finding provides a necessary condition to support the hypothesis that lead may influence cognitive function by its effect on brain volumes...
  10. ncbi request reprint Lead and cognitive function in adults: a questions and answers approach to a review of the evidence for cause, treatment, and prevention
    Brian S Schwartz
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
    Int Rev Psychiatry 19:671-92. 2007
    ..The strong and compelling body of literature on lead and cognitive dysfunction and decline also supports a need for intervention studies to prevent lead-related cognitive decline...
  11. doi request reprint Body mass index and the built and social environments in children and adolescents using electronic health records
    Brian S Schwartz
    Department of Environmental Health Sciences, Johns Hopkins University, Baltimore, Maryland, USA
    Am J Prev Med 41:e17-28. 2011
    ..No prior studies in children have evaluated how age may modify relationships of the built and social environments with BMI, nor evaluated the range of scales and contexts over which places may influence health...
  12. ncbi request reprint Findings on brain MRI from research studies of occupational exposure to known neurotoxicants
    Hannah H Alphs
    Department of Radiology and Radiological Science, Johns Hopkins Hospital, Phipps Building, Room B112, 600 N Wolfe St, Baltimore, MD 21287, USA
    AJR Am J Roentgenol 187:1043-7. 2006
    ..Our purpose is to identify the prevalence of incidental neuroradiologic abnormalities in an adult population with past occupational exposure to lead who underwent brain MRI as part of a large, longitudinal cohort study...
  13. ncbi request reprint Modelling disease progression in terms of exposure history
    K Bandeen-Roche
    Department of Biostatistics, Johns Hopkins University, Baltimore, MD 21205, USA
    Stat Med 18:2899-916. 1999
    ..We illustrate our methodology using data from a longitudinal epidemiologic investigation of the effects of amateur boxing on neuropsychologic function...
  14. pmc Associations of tibial lead levels with BsmI polymorphisms in the vitamin D receptor in former organolead manufacturing workers
    B S Schwartz
    Division of Occupational and Environmental Health, Department of Environmental Health Sciences, Johns Hopkins School of Hygiene and Public Health, Baltimore, Maryland 21205, USA
    Environ Health Perspect 108:199-203. 2000
    ..Although controversy remains on the influence of the VDR genotype on bone mineral density, the data suggest that variant VDR alleles modify lead concentrations in bone, either by influencing lead content or calcium content or both...
  15. pmc Associations of blood lead, dimercaptosuccinic acid-chelatable lead, and tibia lead with polymorphisms in the vitamin D receptor and [delta]-aminolevulinic acid dehydratase genes
    B S Schwartz
    Department of Environmental Health Sciences, Johns Hopkins School of Hygiene and Public Health, Baltimore, MD 21205, USA
    Environ Health Perspect 108:949-54. 2000
    ..4 microg/g) than did workers with the VDR bb genotype. The current data confirm past observations that the ALAD gene modifies the toxicokinetics of lead and also provides new evidence that the VDR gene does so as well...
  16. ncbi request reprint Past adult lead exposure is associated with longitudinal decline in cognitive function
    B S Schwartz
    Department of Epidemiology, Johns Hopkins School of Hygiene and Public Health, Baltimore, MD 21205, USA
    Neurology 55:1144-50. 2000
    ..To determine whether adults with past exposure to neurotoxicants have progressive declines in cognitive function years after exposure has ceased, and whether tibia lead is a predictor of the magnitude of change...
  17. ncbi request reprint Associations of blood lead, dimercaptosuccinic acid-chelatable lead, and tibia lead with neurobehavioral test scores in South Korean lead workers
    B S Schwartz
    Division of Occupational and Environmental Health, Johns Hopkins School of Hygiene and Public Health, 615 North Wolfe St, Room 7041, Baltimore, MD 21205, USA
    Am J Epidemiol 153:453-64. 2001
    ..In these currently exposed workers, blood lead was a better predictor of neurobehavioral performance than was tibia or DMSA-chelatable lead, mainly in the domains of executive abilities, manual dexterity, and peripheral motor strength...
  18. pmc Characterization of toxicokinetics and toxicodynamics with linear systems theory: application to lead-associated cognitive decline
    J M Links
    Department of Environmental Health Sciences, The Johns Hopkins School of Hygiene and Public Health, Baltimore, Maryland 21205 2179, USA
    Environ Health Perspect 109:361-8. 2001
    ..We use lead-associated cognitive decline as a specific example where the approach may be applied...
  19. ncbi request reprint Associations of tibia lead, DMSA-chelatable lead, and blood lead with measures of peripheral nervous system function in former organolead manufacturing workers
    P L Tassler
    Department of Epidemiology, Johns Hopkins School of Hygiene and Public Health, Baltimore, Maryland 21205, USA
    Am J Ind Med 39:254-61. 2001
    ....
  20. doi request reprint The contextual influence of coal abandoned mine lands in communities and type 2 diabetes in Pennsylvania
    Ann Y Liu
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe St, Baltimore, MD 21205, United States
    Health Place 22:115-22. 2013
    ..This study provides key empirical evidence of adverse impacts of CEC in communities on an important chronic disease, illustrating the contextual effects of living in long-term degraded landscapes and communities...
  21. pmc Protein kinase C activity and the relations between blood lead and neurobehavioral function in lead workers
    Kyu Yoon Hwang
    Division of Occupational and Environmental Health, Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD 21205, USA
    Environ Health Perspect 110:133-8. 2002
    ..We hypothesize that subjects with higher PKC activity in the presence of lead may be more susceptible to the health effects of lead...
  22. ncbi request reprint Migraine disability assessment (MIDAS) score: relation to headache frequency, pain intensity, and headache symptoms
    Walter F Stewart
    Johns Hopkins School of Public Health, Baltimore, MD 21205, USA
    Headache 43:258-65. 2003
    ..To determine the extent to which variation in the Migraine Disability Assessment (MIDAS) score is associated with headache frequency, pain intensity, headache symptoms, gender, and employment status...
  23. ncbi request reprint Apolipoprotein E epsilon 4 and short-term recovery from predominantly mild brain injury
    Joshua N Liberman
    Department of Epidemiology, Johns Hopkins School of Public Health, Baltimore, MD, USA
    Neurology 58:1038-44. 2002
    ..To determine whether APOE genotype explained variability in short-term recovery from predominantly mild traumatic brain injury (TBI)...
  24. doi request reprint The built environment and obesity: a systematic review of the epidemiologic evidence
    Jing Feng
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
    Health Place 16:175-90. 2010
    ..There was very little between-study similarity in methods in both types of approaches, which prevented estimation of pooled effects. The great heterogeneity across studies limits what can be learned from this body of evidence...
  25. ncbi request reprint Migraine and autonomic nervous system function: a population-based, case-control study
    Aaron Shechter
    Department of Epidemiology, The Johns Hopkins School of Hygiene and Public Health, Baltimore, MD, USA
    Neurology 58:422-7. 2002
    ..This study determines if measures of the function of the autonomic nervous system (ANS) differ in a population study of 80 migraine cases vs 85 controls matched for age, race, and sex...
  26. ncbi request reprint Immune reactive cells in senile plaques and cognitive decline in Alzheimer's disease
    Anne K Vehmas
    Department of Pathology, Neuropathology Division, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Ross 558, Baltimore, MD 21205 2196, USA
    Neurobiol Aging 24:321-31. 2003
    ..Tau immunoreactivity appears as the strongest morphological correlate of dementia...
  27. ncbi request reprint Familial risk of migraine: variation by proband age at onset and headache severity
    W F Stewart
    Center for Health Research and Rural Advocacy, Geisinger Health System, Baltimore, MD, USA
    Neurology 66:344-8. 2006
    ..It is well established that migraine aggregates within families. Less is known about the influence of proband characteristics (e.g., age at onset, headache severity) on familial aggregation...
  28. ncbi request reprint Medication use and disability among migraineurs: a national probability sample survey
    D D Celentano
    Department of Health Policy and Management, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205
    Headache 32:223-8. 1992
    ..CONCLUSIONS: Most migraineurs in the United States are not being treated with prescription medications. Many active migraine patients would benefit from appropriate treatment if care was sought and diagnosis made...
  29. ncbi request reprint Prevalence of frequent headache in a population sample
    A I Scher
    Department of Epidemiology, The Johns Hopkins University, Baltimore, MD 21205, USA
    Headache 38:497-506. 1998
    ..Although more common in females than males, the female preponderance of frequent headache is less marked than in migraine. The sex ratio varies by frequent headache subtype...
  30. ncbi request reprint Effects of lead on the adult brain: a 15-year exploration
    Walter F Stewart
    Center for Health Research, Geisinger Clinic, Danville, Pennsylvania 17822, USA
    Am J Ind Med 50:729-39. 2007
    ..Historically, there has been minimal concern about the effect of adult lead exposure on the brain. Evidence from recent longitudinal studies raise concerns about the long-term effects of past exposure...
  31. ncbi request reprint Quality of life in a US national sample of adults with diabetes and motility-related upper gastrointestinal symptoms
    Reshmi Siddique
    Janssen Research Foundation, Titusville, New Jersey, USA
    Dig Dis Sci 47:683-9. 2002
    ..In conclusion, this is the first US national survey to demonstrate that motility-related upper gastrointestinal symptoms are associated with a significantly lower quality of life in individuals with diabetes...
  32. doi request reprint Urinary incontinence in women: variation in prevalence estimates and risk factors
    Vatche A Minassian
    Division of Urogynecology and Reconstructive Pelvic Surgery, Department of Obstetrics and Gynecology, Geisinger Medical Center, Danville, Pennsylvania 17822, USA
    Obstet Gynecol 111:324-31. 2008
    ..To understand variation in prevalence of urinary incontinence (UI) and risk factors, given different definitions...
  33. ncbi request reprint Cost of lost productive work time among US workers with depression
    Walter F Stewart
    AdvancePCS Center for Work and Health, Hunt Valley, MD, USA
    JAMA 289:3135-44. 2003
    ..Evidence consistently indicates that depression has adversely affected work productivity. Estimates of the cost impact in lost labor time in the US workforce, however, are scarce and dated...
  34. ncbi request reprint Multivariate modeling of age and retest in longitudinal studies of cognitive abilities
    Emilio Ferrer
    Department of Psychology, University of California, Davis, CA 95616 8686, USA
    Psychol Aging 20:412-22. 2005
    ..The authors suggest that although the changes in memory and processing speed may be correlated over time, age alone does not capture such a covariation...
  35. ncbi request reprint Pain exacerbation as a major source of lost productive time in US workers with arthritis
    Judith A Ricci
    Caremark, Hunt Valley, MD 21031, USA
    Arthritis Rheum 53:673-81. 2005
    ..To estimate the prevalence of arthritis and arthritis pain exacerbations in US workers including impact on functioning and lost productive work time (LPT)...
  36. ncbi request reprint Back pain exacerbations and lost productive time costs in United States workers
    Judith A Ricci
    Caremark, Hunt Valley, MD 21031, USA
    Spine (Phila Pa 1976) 31:3052-60. 2006
    ..Cross-sectional with follow-up case-control component...
  37. ncbi request reprint Estimated economic costs of overactive bladder in the United States
    Teh Wei Hu
    Department of Health Economics, University of California, Berkeley, School of Public Health, Warren Hall, Room 412, Berkeley, CA 94720, USA
    Urology 61:1123-8. 2003
    ..To estimate the economic costs of overactive bladder (OAB), including community and nursing home residents, and to compare the costs in male versus female and older versus younger populations...
  38. ncbi request reprint The epidemiology and impact of migraine
    Marcelo E Bigal
    Department of Neurology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
    Curr Neurol Neurosci Rep 4:98-104. 2004
    ..Probable migraine is a prevalent form of migraine, and like migraine with and without aura it produces decrements in health-related quality of life and increments in disability relative to control subjects...
  39. ncbi request reprint Screening for dementia by telephone using the memory impairment screen
    Richard B Lipton
    Department of Neurology, Albert Einstein College of Medicine, Bronx, New York 10461, USA
    J Am Geriatr Soc 51:1382-90. 2003
    ..To develop and assess telephone-based screening tests for dementia, especially Alzheimer's disease (AD)...
  40. ncbi request reprint Lost productive time and cost due to common pain conditions in the US workforce
    Walter F Stewart
    AdvancePCS Center for Work and Health, Hunt Valley, MD, USA
    JAMA 290:2443-54. 2003
    ..Common pain conditions appear to have an adverse effect on work, but no comprehensive estimates exist on the amount of productive time lost in the US workforce due to pain...
  41. doi request reprint Head or neck injury increases the risk of chronic daily headache: a population-based study
    Lars J Stovner
    Neurology 71:383-5. 2008
  42. ncbi request reprint Lost productive work time costs from health conditions in the United States: results from the American Productivity Audit
    Walter F Stewart
    AdvancePCS Center for Work and Health, Hunt Valley, Maryland, USA
    J Occup Environ Med 45:1234-46. 2003
    ..Health-related LPT costs are substantial but largely invisible to employers. Costs vary significantly by worker characteristics, suggesting that intervention needs vary by specific subgroups...
  43. pmc Cutaneous allodynia in the migraine population
    Richard B Lipton
    Department of Neurology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
    Ann Neurol 63:148-58. 2008
    ..To develop and validate a questionnaire for assessing cutaneous allodynia (CA), and to estimate the prevalence and severity of CA in the migraine population...
  44. ncbi request reprint Head or neck injury increases the risk of chronic daily headache: a population-based study
    James R Couch
    Department of Neurology, University of Oklahoma Medical School, Oklahoma City, OK 73104, USA
    Neurology 69:1169-77. 2007
    ..To evaluate the extent to which head and neck injury (HANI) contributes to chronic daily headache (CDH)...
  45. ncbi request reprint Tools for diagnosing migraine and measuring its severity
    Richard B Lipton
    Department of Neurology, The Albert Einstein College of Medicine, Bronx, NY, USA
    Headache 44:387-98. 2004
    ..Migraine is assessed to determine how well it meets criteria for screening and the steps that are necessary before firm public policy recommendations for screening for migraine are possible...
  46. ncbi request reprint Lost productive time and costs due to diabetes and diabetic neuropathic pain in the US workforce
    Walter F Stewart
    Geisinger Clinic, Danville, PA 17822 3030, USA
    J Occup Environ Med 49:672-9. 2007
    ..Estimate the impact of diabetes and neuropathic pain on the US workforce...
  47. ncbi request reprint Health-related lost productive time (LPT): recall interval and bias in LPT estimates
    Walter F Stewart
    The AdvancePCS Center for Work and Health, Hunt Valley, Maryland, USA
    J Occup Environ Med 46:S12-22. 2004
    ..Our data suggest that variation in relatively short recall periods influences estimates of health-related LPT. A 2-week recall period may be optimal for minimizing overall reporting error but requires additional research to verify...
  48. ncbi request reprint Modeling age and retest processes in longitudinal studies of cognitive abilities
    Emilio Ferrer
    Department of Psychology, University of California, Davis, Davis, CA, USA
    Psychol Aging 19:243-59. 2004
    ..It is suggested that both age and retest should be modeled simultaneously when analyzing longitudinal data because part of the change across occasions may be attributable to practice or reactive effects...
  49. ncbi request reprint The comorbidity of headache with other pain syndromes
    Ann I Scher
    Department of Preventive Medicine and Biometrics, Uniformed Services University, Bethesda, MD 20814, USA
    Headache 46:1416-23. 2006
    ..We consider exogenous and endogenous factors, and methodological challenges, in understanding whether and how 2 pain conditions may be related...
  50. ncbi request reprint Caffeine as a risk factor for chronic daily headache: a population-based study
    Ann I Scher
    Department of Preventive Medicine and Biometrics, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814, USA
    Neurology 63:2022-7. 2004
    ..To investigate the possible association of dietary caffeine consumption and medicinal caffeine use with chronic daily headache (CDH)...
  51. ncbi request reprint Validation of the work and health interview
    Walter F Stewart
    The Advance PCS Center for Work and Health, Hunt Valley, Maryland
    Pharmacoeconomics 22:1127-40. 2004
    ..We describe the validation of the Work and Health Interview (WHI), a questionnaire that provides a measure of lost productive time (LPT) from work absence and reduced performance at work...
  52. ncbi request reprint Prevalence and socioeconomic impact of upper gastrointestinal disorders in the United States: results of the US Upper Gastrointestinal Study
    Michael Camilleri
    Mayo Clinic College of Medicine, Center for Enteric Neurosciences and Translational Epidemiological Research, Rochester, MN, USA
    Clin Gastroenterol Hepatol 3:543-52. 2005
    ..This study examined the prevalence of upper gastrointestinal (GI) symptoms and symptom groupings and determined impact on disability days in a nationally representative US sample...