Mortality of short-term workers in two international cohorts.
The purpose of this study was to compare the pattern of mortality of blue-collar workers employed less and more than 1 year in the man-made vitreous fiber (MMVF) and the reinforced plastic industries, the latter group being exposed to styrene. We conducted an analysis among 21,784 workers with less than 1 year of employment (short-term workers) and 19,117 workers with 1 or more years of employment (long-term workers) employed in eight European countries. We conducted analyses based on external as well as internal comparisons. In both cohorts, the standardized mortality ratio for all causes among short-term workers was approximately 40% higher, compared with that for longer-term workers. In internal comparisons, the difference was reduced to 9% in the MMVF cohort and 11% in the styrene cohort. Workers with less than 1 month of employment displayed an increased mortality in both cohorts and in most countries. The increased mortality among short-term workers was not concentrated shortly after they quit employment. In both cohorts, short-term workers had a higher mortality from external causes, while little difference was seen in mortality from ischemic heart disease and malignant neoplasms. Although extra-occupational factors may contribute to increase the mortality of short-term workers and, in particular, of those employed for less than 1 month, the difference observed in analyses adjusted for characteristics of employment suggested a relatively small difference in mortality from most causes.
Boffetta
P
P
International Agency for Research on Cancer, Lyon, France.
Sali
D
D
Kolstad
H
H
Coggon
D
D
Olsen
J
J
Andersen
A
A
Spence
A
A
Pesatori
A C
AC
Lynge
E
E
Frentzel-Beyme
R
R
Chang-Claude
J
J
Lundberg
I
I
Biocca
M
M
Gennaro
V
V
Teppo
L
L
Partanen
T
T
Welp
E
E
Saracci
R
R
Kogevinas
M
M
D000328:Adult; D002423:Cause of Death; D002617:Chemical Industry; D015331:Cohort Studies; D005060:Europe / Q000453:epidemiology; D006801:Humans; D008297:Male; D019016:Mineral Fibers; D009784:Occupational Diseases / Q000401:mortality*; D016273:Occupational Exposure; D010969:Plastics; D020058:Styrene; D013997:Time Factors
D019016:Mineral Fibers; D010969:Plastics; D020058:Styrene