Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Increased bladder cancer risk among workers exposed to o-toluidine and aniline: a reanalysis.

Authors
Carreón-T; Hein-MJ; Viet-SM; Hanley-KW; Ruder-AM; Ward-EM
Source
Occup Environ Med 2010 May; 66(5):348-350
NIOSHTIC No.
20036082
Abstract
Introduction: In 1991, the U.S. National Institute for Occupational Safety and Health (NIOSH) reported an increased bladder cancer risk in a cohort of 1749 workers potentially exposed to o-toluidine and aniline at a chemical manufacturing plant. Additional information showed that workers in certain departments had been misclassified regarding o-toluidine exposure; therefore, we conducted a reanalysis of the data using updated exposure categories. Methods: We updated exposure categories based on information ascertained during a plant walkthrough, documents on file at the plant, interviews with current and former employees, and answers provided by company and union officials on specific questions. Bladder cancer incidence was determined through 31 December 1988 and mortality through 31 December 1994. Results: Thirteen cases of bladder cancer were observed, versus 3.57 expected (New York State rates excluding New York City) [standardized incidence ratio (SIR) 3.64, 95% confidence interval (CI) 1.94-6.23]. Among workers classified as definitely exposed, increasing risks were observed for longer duration of employment [for .10 years, standardized rate ratio (SRR) 6.07, 95% CI 0.77-48.17] and time since first employment in the exposed departments (for .20 years, SRR 3.39, 95% CI 0.40-29.03). One bladder cancer death was observed among those definitely exposed. Conclusions: These findings are comparable to the results reported earlier by NIOSH, and confirm that workers in this plant have an increased risk of bladder cancer.
Keywords
Bladder-cancer; Bladder-disorders; Chemical-factory-workers; Chemical-industry-workers; Chemical-manufacturing-industry; Mortality-data; Occupational-diseases; Occupational-exposure; Risk-factors; Risk-analysis; Statistical-analysis; Work-practices; Work-environment; Work-performance; Worker-health; Workplace-studies; Author Keywords: o-toluidine; bladder cancer; occupational exposure; NIOSH; chemical industry
Contact
Tania Carreón, National Institute for Occupational Safety and Health, DSHEFS, Mail Stop R15, 4676 Columbia Parkway, Cincinnati, OH 45226
CODEN
OEMEEM
CAS No.
62-53-3
Publication Date
20100501
Document Type
Journal Article
Email Address
tjc5@cdc.gov
Fiscal Year
2010
NTIS Accession No.
NTIS Price
Issue of Publication
5
ISSN
1351-0711
NIOSH Division
DSHEFS
Source Name
Occupational and Environmental Medicine
State
OH
TOP