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MORTALITY EXPERIENCE OF INSULATION WORKERS IN THE UNITED STATES and Canada, 1943-1976*
Irving J. Selikoff
Environmental Sciences Laboratory Mount Sinai School of Medicine The City University of New York New York, New York 10029
E. Cuyler Hammond and Herbert Seidman
Department of Epidemiology and Statistics American Cancer Society
New York, New York 10017
In 1964, we reported data concerning the mortality experience of a cohort of asbestos insulation workers in the New York-New Jersey metropolitan area 1943 1962 1 Significant increases in deaths of lung cancer, mesothelioma, gastrointestinal cancer and asbestosis were found. Findings were limited to observation of only 632 mep, .however. On January I, 1967, a larger cohort was enrolled for prospective observation and included all 17,800 men on the rolls of the insulation workers' union (International Association of Heat and Frost Insulators and Asbestos Workers. AFL-CIO, CLC) in the United States and Canada on that day. This second cohort included the survivors of the original 632 New York-New Jersey men. Observation has been maintained and an interval report of deaths in this group since January 1, 1967 has been made.! The present analysis details findings among these men through
December 3 I, 1976.
Asbestos Insulation in the United States
Asbestos, as a mixture ST fiber and sodium silicate, was first used as an insulation
material in 1866 and as asbestos cement about 1870. Magnesia with asbestos as a
binder soon followed and air-cell covering, using corregated asbestos paper, was
introduced in 1 898
.
The first union of insulation workers in the United Stales was formed in New York
City in 1883 under a charter issued by the Knights of Labor (predecessor of the
American Federation of Labor), as `The Salamander Association of Boiler and Pipe
Fehers.'' The present union of insulation workers in this country as chartered by the
AFL in 1910, as the International Association of Heat hnd Frost Insulators and
Asbestos Workers, by the amalgamation of the Salamanders Association of New York
'uh other independent locals throughout the country. Members of this union are
insulation workers, primarily employed in the building trades doing construction
insulation work but also employed as insulation workers in refineries, industrial plants,
'This study was supported fcv grams from the American Cancer Society (R-S3), the National Institute for Occupational Safety and Health (0H0O320) and the National Institute of Environ mental Health Sciences (ES00928) of the U.S. Department of Health. Education and Welfare, are the Health Research Council of the City of New York (L/12'2).
91
0071-8923/79/0330-0091 St 75/0 C 1979, NYAS
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Table I Expected ano Observed Deaths of Selected Causes Among 632 Nfw' Yorx-New Jersey asbestos Insulation Workers First
Employed Before January I. 1943, ano 833 Workers First Employed January I, 1943-December 31, 1962, Orserved from ______ _________________________ January I, 1943 or Date of First Employment-Decemier 31, 1976
Leu than 20 Years from First Exposure to:
Chrysolite only before 1943. plus amositc after 1943
Chrysolite and amosite
Number of Men in
Category
Man-ycart of
Observation
323 1,970 833 13.320
Deaths from Selected Causes Less than 20 Years from First Exposure to Possible Amositc and/or Chrysolite Asbestos Exposure^
Lung Cancer Exp* Obs.
Mesothelioma t
Obs.
Rate per 1000 Man-years
Noninfectious Pulmonary
Diseases. Total
Exp* Obs.
Asbestosist
Obs.
Rate per 1000 Man-vcan
0.2 0 0 0 0.1 0 0 1.1 2 0 0 0.3 0 0
0 0
TRaiej Rre not ivailable. but these hive been rare causes of death in the general population, t Amositc insulation materials were first introduced shortly before and during World War II.
>
a
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3
P
Table 9
'
Expected and Observed Deaths of Selected Causes among 631 New York-New Jersey Asbestos Insulation Workers
First Employed Before January I, 1943, and 833 Workers First Employed January 1. 1943-December 31, 1962.
................... _
Observed from January 1, 1943 or Date of First Employmem-December 31. 1976 ----- ----- --- .............. ....... ......... g - - ------- : - -- _!L'.J
. Deaths of Selected Causes 20-34 Years from Onset of Exposure
,J
^ 2. r~
First Exposure
Number of Men in
Category
Man-years of
Observation
Lung Cancer Exp* Obs.
Mesothelioma!
Obv
Rate per (000 Man-years
Noninfectious Pulmonary
Diseases, Total
Exp* Obs.
Asbestosist
Obs.
Rale per 1000 Man-years
a
7 c*
iefore 1943 1943-1952 1953-1962 1963-1969 1970-1976
Total 1941-1962
1943-1952 1953-1962 1963-1969 1970-1976
Total
CO I
523 393
3253 2430
\.\ 9 1 \ 4 11 4
0.31 0.7 0 0 1 65 0.7 3 2
0* 0 82
H
154
418 0.3 5 i 2.39 0.1 i i
1.42 O ,
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561
6263
3.0 26 7
M2
16 '
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3 * 0.48 -J C
_
--
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515
2685
1.6 6 n 0.37 0.5 6 5
1.86 CO s
323
3281
1.8 8 3 0.91 0.6 7 6
1.83 -
rr r.
Expected deaths are based upon white male age-specific U S. death rates of ihe US National Center for Health Statistics, 1949-1976. Rates for
1941-1948 were extrapolated from rates for 1949-1955.
.
Rates are not available, but these hue been rare causes of death in the general population.
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Table 16
Deaths Amonc 17,800 asbestos Insulation Workers in the United States and Canaoa Januabv 1, 1967-December 31, 1976. Analysis by Duration from Onset or Employment
Toul Men Man-years of Observation
Before 20 Years from Onset
12.683
89.462
Observed
Ratio o/e
20 or More Years from Onset
12.051
77.391
Observed
Ratio o/e
Underlying Cause of Death
Toul deaths, all causes
Cancer, all sites
Cancer of lung
Pleural mesothelioma
Peritoneal mesothelioma
Mesothelioma, n.o-s.
Cancer of esophagus
Cancer of stomach
Cancer of colon-rectum
Cancer of larynx
Cancer of pharynx, buccal .
Cancer of kidney
All other cancer
.
Noninfcctious pulmonary diseases, toul
Asbestosts
All other causes
_____
Expected*
282.9 42.6 11.9 t t. t 0.6 1.5 4.1 0.4 1.3 l.l 21.7 5.2 t
235.1
(BE)
325 83 36 2 3 0 1 l 4 2 3 3 28 8 8
234
(DC)
325 77 32 2 0 1 1 0 4 2 2 3 30 11 2
237
(BE)
1.15 1.95 3.03
--
--
--
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--- w --
1.29
1--.54
1.00
(DC)
1.15 1.81 2.69
--
-- --
--
--
-- -- -- --
1.38 2.12 --
1.01
Expected*
' 1376.0 277.1 93.7 t t t 6.5 12.7 34.0 4.3 8.8 7.0 110.1 53.8 t
I04S.1
(BE)
1946 912 450
61 109
0 17 21 55 9 18 16 156 204 160 830
(DC)
1946 845 397 23 24 54 17 18 54 7 14
15 222 177
76 924
(BE)
1.41 3.29 4.80 . __ --
-- 2.64 1.65 1.62 2.09 2.05 2.29 1.42 3.78 --
0.79
(DC)
1.4) 3.05 4.24
__
-- 2.64 1.42 1.59 1.63 1.59 2.14 2.02 3.28 --
0.88
`Expected deaths are based upon white male age-specific U-S. death rates of the US. National Center for Health Sutisiics, 1967-1976. Rates arc not available, but these have been rare causes of death in the general population. (BE)'. Best evidence. Number of deaths categarixed after review of best available information (autopsy, surgical, clinical).
(DC) . Number of deaths as recorded from death certificate information only.
t ablx i/
Deaths amonc 17,800 Asbestos Insulation Workers in United States and Canada. January i, (967-December 21, 1976.
Analysis by Duration from Onset of Employment
Lung Cincer
Pleural Mesothelioma
Peritoneal Mesothelioma
Duration from Onsel (Years)
<10 10-14'
15-19 20-24
25-29 30-34
35-39 40-44 45 -
`
Number of Men
8.190 9.063 9.948 8.887 6.596 3.547 2.020 1.108 1.448
Person-ycm of
Observation
26,393 29.003 34.066 31.268 20.657 1 1.598 5.403 3.160 5.305
Eap.`
0.7 2.7 8.5 17.0 21.0 18 4
1 1.5 81 17.8
Observed
(BE) (DC)
00 75 29 27 59 57 105 96 112 103 65 57 40 131 69 53
Ratio o/e
(BE) (DC)
2.55 1.82 3.40 3.17 3.48 3.36 500 4 58 6.08 5.59 5 68 4.98 4.93 3.82 3.89 2.98
Number
(BE) (DC)
0 0 t
6 13 9 15 4 14
No./1000 Personvears (BE)
0
0
0.06 0.19 0.63 0.78 2.78 1.27 2.64
Number
(BE) (DC)
00 00
.3 0
32
19 3 23 6 19 5 16 3 29 5
No./IOOO Personvears (BE)
0
0
0.09 0.10 0.92 1.98 3.52 5 06 5 47
`Expected deaths are based upon hite male age-specific L1 S. death rales of the U S. National Center for Health Statistics. 1967-1976 Smoking
habits not taken into account.
(BE): Best evidence Number of deaths categorized after revie* of best avaitabie information (autopsy, surgical, clinical). (DC): Number of deaths as recorded from death certificate information only.
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