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Featured researches published by John M. Wood.


American Journal of Industrial Medicine | 2008

National trends in silicosis mortality in the United States, 1981–2004†‡

Ki Moon Bang; Michael D. Attfield; John M. Wood; Girija Syamlal

BACKGROUND This article describes trends in mortality with silicosis and identifies industries and occupations with elevated silicosis mortality. METHODS A total of 6,326 deaths with silicosis for 1981-2004 were analyzed for trends and association with occupation and industry. Annual mortality rates were age-adjusted to the U.S. Year 2000 population. A linear regression model was used for analyzing mortality trends. Proportionate mortality ratios (PMRs) were based on 1,440 deaths with information on usual industry and occupation. RESULTS Overall age-adjusted mortality rates per million declined from 2.4 in 1981 to 0.7 in 2004. Industries having significantly elevated PMRs for silicosis included mining and quarrying. Occupations with elevated PMRs included those associated with metal and mineral processing. CONCLUSIONS The results suggest that considerable progress has been made towards elimination of this preventable disease. However, about 30 silicosis deaths per year have been recorded since 1995 among those of working age, warranting continued efforts to effectively limit workplace exposures.


International Journal of Occupational and Environmental Health | 2008

Occupational Risks for Idiopathic Pulmonary Fibrosis Mortality in the United States

Germania A. Pinheiro; Vinicius C. Antao; John M. Wood; James T. Wassell

Abstract Metal and wood dust exposures have been identified as possible occupational risk factors for idiopathic pulmonary fibrosis (IPF). We analyzed mortality data using ICD-10 code J84.1-“Other interstitial pulmonary diseases with fibrosis,” derived age-adjusted mortality rates for 1999-2003, and assessed occupational risks for 1999, by calculating proportionate mortality ratios (PMRs) and mortality odds ratios (MORs) using a matched case-control approach. We identified 84,010 IPF deaths, with an age-adjusted mortality rate of 75.7 deaths/ million. Mortality rates were highest among males, whites, and those aged 85 and older. Three industry categories with potential occupational exposures recognized as risk factors for IPF were identified: “Wood buildings and mobile homes” (PMR = 4.5,95% confidence interval (CI) 1.2-11.6 and MOR = 5.3, 95% CI 1.2–23.8), “Metal mining” (PMR = 2.4, 95% CI 1.3–4.0 and MOR = 2.2, 95% CI 1.1–4.4), and “Fabricated structural metal products” (PMR = 1.9,95% CI 1.1–3.1 and MOR = 1.7, 95% CI 1.0–3.1). Workers in these industry categories may benefit from toxicological studies and improved surveillance for this disease.


International Journal of Occupational and Environmental Health | 2006

Malignant Mesothelioma Mortality in the United States, 1999–2001

Ki Moon Bang; Germania A. Pinheiro; John M. Wood; Girija Syamlal

Abstract Malignant mesothelioma is strongly associated with asbestos exposure. This paper describes demographic, geographic, and occupational distributions of mesothelioma mortality in the United States, 1999–2001. The data (n = 7,524) were obtained from the National Center for Health Statistics multiple-cause-of-death records. Mortality rates (per million per year) were age adjusted to the 2000 U.S., standard population, and proportionate mortality ratios (PMRs) were calculated by occupation and industry, and adjusted for age-sex, and race. The overall age-adjusted mortality rate was 11.52, with males (22.34) showing a six fold higher rate than females (3.94). Gographic distribution of mesothelioma mortality is predominantly coastal. Occupations with significantly elevated PMRs included plumbers/pipefitters and mechanical engineers. Industries with significantly elevated PMRs included ship and boat building and repairing, and industrial and miscellaneous chemicals. These surveillance findings, can be useful in generating hypotheses and developin strategies to prevent mesothelioma.


American Journal of Industrial Medicine | 2014

Diseases attributable to asbestos exposure: years of potential life lost, United States, 1999-2010.

Ki Moon Bang; Jacek M. Mazurek; John M. Wood; Scott Hendricks

BACKGROUND Although asbestos use has been restricted in recent decades, asbestos-associated deaths continue to occur in the United States. OBJECTIVES We evaluated premature mortality and loss of potentially productive years of life attributable to asbestos-associated diseases. METHODS Using 1999-2010 National Center for Health Statistics mortality data, we identified decedents aged ≥25 years whose death certificate listed asbestosis and malignant mesothelioma as the underlying cause of death. We computed years of potential life lost to life expectancy (YPLL) and to age 65 (YPLL65 ). RESULTS During 1999-2010, a total of 427,005 YPLL and 55,184 YPLL65 were attributed to asbestosis (56,907 YPLL and 2,167 YPLL65 ), malignant mesothelioma (370,098 YPPL and 53,017 YPLL65 ). Overall and disease-specific asbestos-attributable total YPLL and YPLL65 and median YPLL and YPLL65 per decedent did not change significantly from 1999 to 2010. CONCLUSIONS The continuing occurrence of asbestos-associated diseases and their substantial premature mortality burden underscore the need for maintaining prevention efforts and for ongoing surveillance to monitor temporal trends in these diseases.


American Journal of Industrial Medicine | 2009

Excessive longitudinal FEV1 decline and risks to future health: A case–control study†

Mei Lin Wang; Bipin H. Avashia; John M. Wood; Edward L. Petsonk

BACKGROUND Accelerated loss of forced expiratory volume in 1 s (FEV(1)) in an individual is considered an indicator of developing lung disease. METHODS We investigated longitudinal FEV(1) slopes, calculated by simple linear regression, and adverse health outcomes after 10-30 years, among 1,428 chemical plant workers. Cases were defined by FEV(1) slopes below 5th percentile values for the cohort. Cases were matched with controls (107 pairs) for race, gender, smoking status, year of birth, age, height, and calendar year at first test. Matched pair statistics were used for comparisons. RESULTS Cases had a higher proportion, compared to controls, of diagnosis of COPD or emphysema (17.8% vs. 1.9%, P = 0.0002), medication use for respiratory diseases (24.3% vs. 4.7%, P < 0.0001), dyspnea (15% vs. 3.7%, P = 0.0042), and wheezing or rhonchi on examination (10.3% vs. 1.9%, P = 0.0225). CONCLUSIONS Chemical plant workers who experienced accelerated FEV(1) declines experienced four to nine times as many adverse health conditions over 10-30 years.


International Journal of Occupational and Environmental Health | 2008

Asbestosis Mortality Surveillance in the United States, 1970–2004

Ki Moon Bang; Jacek M. Mazurek; Girija Syamlal; John M. Wood

Abstract To describe the demographic, geographic, and occupational distribution of asbestosis mortality in the United States during 1970–2004, we identified a total of 25,413 asbestosis deaths. We calculated national, state, and county death rates, age-adjusted to the 2000 U.S. standard population. We also calculated industry- and occupation-specific proportionate mortality ratios (PMRs), adjusted for age, sex, and race, and corresponding confidence intervals (CIs) using available data. The overall U.S. age-adjusted asbestosis death rate was 4.1 per million population per year; the rate for males (10.4) was nearly 35-fold higher than that for females (0.3). It increased significantly from 0.6 to 6.9 per million population from 1970 to 2000 (p<0.001),and then declined to 6.3 in 2004 (p=0.014). High asbestosis death rates occurred predominantly, though not exclusively, in coastal areas. Industries with highest PMRs included ship and boat building and repairing (18.5; 95% CI 16.3–20.9) and miscellaneous nonmetallic mineral and stone products (15.9; 95% CI 13.0–19.5). Occupations with highest PMRs included insulation workers (109.2; 95% CI 93.8-127.2) and boilermakers (21.3; 95% CI 17.0–26.6).


Morbidity and Mortality Weekly Report | 2018

Asthma Mortality Among Persons Aged 15–64 Years, by Industry and Occupation — United States, 1999–2016

Opal Patel; Girija Syamlal; John M. Wood; Katelynn E. Dodd; Jacek M. Mazurek

In 2015, an estimated 18.4 million U.S. adults had current asthma, and 3,396 adult asthma deaths were reported (1). An estimated 11%-21% of asthma deaths might be attributable to occupational exposures (2). To describe asthma mortality among persons aged 15-64 years,* CDC analyzed multiple cause-of-death data† for 1999-2016 and industry and occupation information collected from 26 states§ for the years 1999, 2003, 2004, and 2007-2012. Proportionate mortality ratios (PMRs)¶ for asthma among persons aged 15-64 years were calculated. During 1999-2016, a total of 14,296 (42.9%) asthma deaths occurred among males and 19,011 (57.1%) occurred among females. Based on an estimate that 11%-21% of asthma deaths might be related to occupational exposures, during this 18-year period, 1,573-3,002 asthma deaths in males and 2,091-3,992 deaths in females might have resulted from occupational exposures. Some of these deaths might have been averted by instituting measures to prevent potential workplace exposures. The annual age-adjusted asthma death rate** per 1 million persons aged 15-64 years declined from 13.59 in 1999 to 9.34 in 2016 (p<0.001) among females, and from 9.14 (1999) to 7.78 (2016) (p<0.05) among males. The highest significantly elevated asthma PMRs for males were for those in the food, beverage, and tobacco products manufacturing industry (1.82) and for females were for those in the social assistance industry (1.35) and those in community and social services occupations (1.46). Elevated asthma mortality among workers in certain industries and occupations underscores the importance of optimal asthma management and identification and prevention of potential workplace exposures.


American Journal of Industrial Medicine | 2006

Twenty-three years of hypersensitivity pneumonitis mortality surveillance in the United States†‡

Ki Moon Bang; David N. Weissman; Germania A. Pinheiro; Vinicius C. Antao; John M. Wood; Girija Syamlal


Morbidity and Mortality Weekly Report | 2015

Silicosis Mortality Trends and New Exposures to Respirable Crystalline Silica — United States, 2001–2010

Bang Km; Jacek M. Mazurek; John M. Wood; White Ge; Hendricks Sa; Weston A


Morbidity and Mortality Weekly Report | 2015

Notes from the Field: Update: Silicosis Mortality - United States, 1999-2013.

Jacek M. Mazurek; Schleiff Pl; John M. Wood; Hendricks Sa; Weston A

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Jacek M. Mazurek

National Institute for Occupational Safety and Health

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Ki Moon Bang

National Institute for Occupational Safety and Health

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Girija Syamlal

National Institute for Occupational Safety and Health

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Germania A. Pinheiro

National Institute for Occupational Safety and Health

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Kathleen Kreiss

National Institute for Occupational Safety and Health

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Muazzam Nasrullah

Centers for Disease Control and Prevention

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David N. Weissman

National Institute for Occupational Safety and Health

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Edward L. Petsonk

National Institute for Occupational Safety and Health

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Katelynn E. Dodd

National Institute for Occupational Safety and Health

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