Long-term mortality study of oil refinery workers I. Mortality of hourly and salaried workers

C. P. Wen, S. P. Tsai, W. A. Mcclellan, R. L. Gibson

Research output: Contribution to journalArticle

Abstract

Wen, C. P. (Gulf Oil Corp., P.O. Box 2100, Houston, TX 77252), S. P. Tsai, W. A. McClellan and R. L Gibson. Long-term mortality study of oil refinery workers. I. Mortality of hourly and salaried workers. Am J Epidemiol 1083;118:526-42.This longitudinal study examined the mortality and cancer experience of workers at the Gulf Oil refinery located in Port Arthur, Texas. The cohort was studied over a period of 41 years, from 1937 to 1978, and consisted of 16, 880 employees, with an accumulation of 406, 198 person-years; 4361 deaths were observed. Emphasis of this study was placed on the experience of the hourly and salaried male workers employed one day or more and those with a minimum of one year employment. The standardized mortality ratio analysis revealed generally favorable mortality experience of the refinery workers, including that of overall cancer. Statistically significant deficits in mortality were found for several cancer sites including bladder, liver, and esophageal cancer. Many of the increased cancer risks suggested in the literature were not confirmed in this study. Although bone cancer was found to be increased significantly, review of those death certificates raises questions as to the accuracy of the recording and coding of this cancer. Sample size of this study is capable of providing sufficient statistical power for the detection of a twofold increase in mortality risk for many cancers, if such risk exists.

Original languageEnglish (US)
Pages (from-to)526-542
Number of pages17
JournalAmerican Journal of Epidemiology
Volume118
Issue number4
StatePublished - Oct 1983
Externally publishedYes

Keywords

  • Carcinogens, environmental
  • Epldemiologic methods
  • Longitudinal studies
  • Mortality
  • Neoplasms
  • Occupational diseases

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Epidemiology

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  • Cite this

    Wen, C. P., Tsai, S. P., Mcclellan, W. A., & Gibson, R. L. (1983). Long-term mortality study of oil refinery workers I. Mortality of hourly and salaried workers. American Journal of Epidemiology, 118(4), 526-542.