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Journal of Occupational Medicine
(ISSN 009a1736)
-
/ I I I August, 1980, Vol. 22 No. 8
1-
1I ORIGINAL ARTICLES
, M i a t e Editor ROBERT R 1. HILKER. M.D.
f,&ive Editor DORIS L. FLOU~~NOMY..S.
tdto,iil Board H. DEAN BELK. M.D
I PATRICIAY. HAGENDORN. M.D. JAMES P. HUGHES. M.D BRUCE W. KARRH. M.D.
PAUL KOTIN. M D. 1 ~ 0 h i A SA. LIF;COLN. M 0. BRIAN MacA14HOX. kt 0 . ROBERT L. RALEIGH. ht 0.
\ DAVID 8 ROBBINS. M O .
f 6 i O r i J l AssirIan1
MARY STEVENS ? M l i G n .H;nrgcr
ELlZABETh CAMERON
uJnuscript Coardinalor BARBARA VASUMPAUR
! CiculJlion Manager
NANCY OLSON
. The loumal of Occupational Medi-
.-ne is owned. copyrighted. and pub:&ed monthly by the American Occupa-
' renal Medical Association. 150 North
Sacker Or.. Chicago. I L 60606.Second
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~ E R T I S I N CREPRESENTATION
CHARLES 8. SLACK, INC. Thorofare. NI 08086
(609)848-1m
Marketing Director RICHARD N. KOASH
Incidence of l o w Back Pain and Prdlacement X-Ray Screening. . . . . . ..515
E. 5. Gibson. M.D.; R. H.Martin, M.D.; and C. W. Terry, BSc.
Mortality Among Automobile Assembly Workers
1. Spray Painters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leonard Chiazze, Ir., Sc.0.; Lorraine D. Ferrence, M.S.; and Pamela H. Wolf, Dr.P.H.
.520
The Cigarette Factor i n LungCancer Due to Chloromethyl Ethers. . . . . . .527 William Weiss, M.D.
Mortality Experience of Employees Exposed to 2,3,7,8-Tetr;rchloro-
dibenzo-p-dioxin (fCD0). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ralph R. Cook, M.D., M.P.H.; JeanC.Townsend. M.S.;
M. Gerald Ott, M.S.; and Lawrence C. Silverstein. M.S.
.530
A Case-Control Study of Prostate Cancer Within a Cohort of RubberandTire Workers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
David F. Goldsmith, M.S.P.H.; Allan H. Smith, M.D.. Ph.D.; and
Anthony I . McMichael, M.D., Ph.D.
533
Cause-SpecificMortality Among Newspaper Web Pressmen. . . . . . . . . . .542
Annlia Paganini-Hill. Ph.D.; Eva Glazer, M.B., B.S.; Brian E.
Henderson, M.D.; and Ronald K. Ross, M.D.
NurselHealth Counseling Model for a Successful Alcoholism
Assistance Program. .......................................... Paul R. Eggum, M.D.; Phillip 1. Keller, M.S.; and
Wayne N. Burton, M.D.
.545
Genital Ulceration Due to Stoddard Solvent. . . . . . . . . . . . . . . . . . . . . . . 1. R. Nethercott. M.D.; 1. M. Pierce; C. Likwornick, M.D.; and
A. H. Murray, M.D.
.549
Occupational Medicine in the People's Republic of China. . . . . . . . . . . . .5f3
Herbert K. Abrams, M.D.
DEPARTMENTS
Letters-to-the-Editor
Use of ,\tedijector Disputed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . An indexing Oversight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjudicators Defended. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The Law in Conflict: Another View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Authof s Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.508 .508 .508
.SO9 .511
Selected Reviews from the Literature
Dermatology ........................... . . . . . . . . . . . . . . . . . . . . 5%
Energy Technology. . . . . . . . . . . . . . . . . . . . . . .................... 559
Internal Medicine. . . . . . . . . . . . . . . . ..-\.. . . .
Mental Health. . . . . . . . . . . . . . . . . . . . . . . . .
.................... ....................
559 559
Surgery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .................... 560
Advertising Sales Manager
General
DAVID C. TOWNSEND
People and Events. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coordinator . Classified Advertising. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BETTY 1. SHELDON
(Classiited A& also appear as display advmising. See Advertisers' Index)
561 .566
i w Advertisers' Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .568
\ POSTMASTER:
MANUSCRIPTS Contributors are rcquested to read Informarion for Aurhors, which is pu&
: IcFnorm d%lo J''ourONf OlccU-- lished In the ianuaty. May and September Issues of the Journal and which may be obtained
Newspaper Web Pressmen
c
Annlia Paganini-Hill, Ph.D; Eva Glazer, M.E., BS.;Brian E. Henderson, M.D.; and Ronald K. Ross, M.D.
A mortality study of 7.367 newspaper web pressmen had been in the union during the specified period, 1,361
- -who were members of the 10s Angeles PressmenS Union met the criteria for inclusion in the mortality study, i.e.,
for at least one year between 1949 and 7965 was h e y had been employedas pressmenforat least one year
conducted. Vital status as of December 37, 7978, was (42 eliminated) and their birthdates were known (139
determined for 7,267 (%%I, and aeath certificates were eliminated). The 181 rejected tended to be those who
obtained for 344 of the 354 decedents. Using a modified were in the union for only a short perlod o i time (82% less
lifetable technique, causespecific monality among the pressmen was compared to that in the UnitedStates white
male population. Overall mortality was similar to that ex-
than five years) and therefore are a group with a very
short duration of exposure to the pressroom environment
Of the 1,361, vital status was determined for 1,241(91%I.
pected. Analysis of the cancer mortalityby site showed no The remainder were initially active workers who sub*
significant differences between observedand expected except for leukemia (7 observed vs. 28 expected)andkidney
cancer(5 observedvs. 7.6 expect& A significant excess of deaths due to cirrhosis of the Iiwr (I7 observed vs. 8 3 expected) was also observed
quently terminated their employment and went to work
in other occupations or in nonunion shops. All members of the cohort were white males.
Death certificates were recovered for 34.4 of the 354 known decedents in the cohort, and the underlyingcause of death was classified according to the International
Classificationof Oiseases (ICD), Eighth Revision.'
A modified lifetable technique' was used to obtain
person-yearsat risk of dying by ten-year age and f ive-year
Newspaper web pressmenconstitute an occupational
subgroup in which there is potentially hazardous chemical exposure.' These men operatethe rotary presses
that print a continuous roll of paper called the "web."
They are exposed to the atmosphere of the pressroom
which contains printing ink, paper dust lubricating oil
and solvents. The high-speed rotating rollers of the presses may accentuate the presence of these substances by filling the pressroom with ink spray and paper fly. The
study reported here describes the mortality experience of
calendar groups. The observation period for an individual began with the first year between1949 and 1965 in which he was a member of the local union. The date last at
which he was known to be alive was used as the date of follow-up for the 120 pressmen whose vital status as of December 31,1978,was unknown. Causespecific mortal;
ty rates for the United States white male population' for
1952,1957,1962,1967.1972a.nd 1975 were used to COT puteexpected number of deaths for the study cohort The expected numbers were calculated by applying the rates
a cohort of newspaper web pressmen.
specific for age and calendar year group to the set of
Methods
A list of all individuals who were members of a Los
Angeles Pressmen's Union at some time between 1949 and 1965 inclusive was obtained from that union. Utiliz-
person-years at risk in that age and calendar year group. Standard mortality ratios (SMRs) were calculated as
observed loo-
expected
ing the records of the local union and of the International Printing and Graphic Communications Union, the authors
attempted to procure for each individual the following iw
formation: date of birth, year first worked as pressman, year last worked as pressman, and vital status as of December 31.1978.From a total of 1.542 individuals who
Reurlb
1
Table 1 summarizes the duration of employment as
pressmen for the men in the study. A high percentage
(65%) had worked for 20 or more years, indicating that
turnover of active members not due to retirement is
relatively slight Most workers began employment at an
From the Department of Communw and Familv Medicine. University of early age (Table 21.Therefore, this industrial group i s one
Sourhem Calilwnu khool of Medicine. 2025 Zonal h e . . lor Angeler. CA
90033 (On.PaganmcHill. H m d k a d R a r L and Caifomtr Sate Dcp~n- in which exposure is often continuous and of long dura-
mmt of Health krvlces. Berkelev. CA 947C4 (MS.Clazerl.
tion.
542
.
I
Yoars Em~loyod
1-9
10-19 20-29 30-39
40 +
Unknown . Total
-Tabla 1. Distribution by Number of Years Employed as Pressman.
Alirr
No.
x
35 4
217 24 354 40 1a2 21 89 10
10 1 a87 100
Doad
No.
9
23 65 69 115 73 354
K
3
6 18 19 32 21 100
Status Unknown
No. K '
49 41
30 25 13 11 00 10 27 23 120 100
c
Table 3 shows that the total mortality among web pressmen was eight percent less than expected (344
deaths observed vs. 374 expected).This deficit in mortality extends to most major causeofdeath categories. How-
ever, significantly elevated SMRs were seen for kidney
cancer, leukemia. and cirrhosis. In this study, the autnors were unable to associate the observed excess for either leukemia or kidney cancer to any particular group either by age started work, year started work, total number of
years worked or interval since first worked, but the
numbers became very small when tnese variables were stratified.
Discussion Seven deaths from leukemia were observed, which
represented a significant excess over the 2.8 expected six of the seven leukemiaswere of the myelomonocytic type. In addition, myeloid leukemia was mentioned in the secondary role on the death certificate of one pressman and one other had myelofibrosis.
An excess in leukemia mortality among pressmen is also evident in the 1951 Registrar General's Occupational Mortality Report' Uoyd et ai' found a modest increase in the number of deaths from leukemia (8 observed vs. 5.1 expected) in a proportional mortality study of newspaper pressmenwhile Viadana and Bross' found evidenceof an excess of leukemia incidence among printers over the years 1959 to 1962 (a relative risk of 1.9 for printers vs. clerks).
There is strong epidemiological and clinical evidence of an association between benzene exposure and risk to leukemia Infante et alereported a fivefold excess risk of all leukemias and temfold excess of deaths from myeloid
and monocytic leukemia among pliofilm workers ex-
posed to benzene. Earlier published case reports were tabulated by Browning' who showed that there was a consistency in the histologic types (myelogenous and monocytic) of benzeneinduced leukemias. In the past
benzene has been used in pressroomsas a solvent and in ink formulation. Although toluene and other hydrocarbon
solvents have now been substituted for benzenc. l h t l
chemical may still be present as a process impurity."
While an excess number of deaths due to blJdder cancer among those in the printing industry has been
'*observed," l2 no unusual mortality due to kidnev
cancer has been reported previously. Black printing'ilk is composed of approximately two percent carbon b l d
dnd one percent asphalt dispensed with mineral oil m d
solvents. Colored printing ink contains addition-11
pigments and dyes, and findings in laboratory nriiil1JIj
have suggested that kidney damage may result frarn e\posure to lead pigments and to benzidinebased color-
''ants." In addition, of the 37 most commonly used coi-
oring pigments and dyes found in printing ink, four ( I d
chromate, lead chromatelead molybdate, carbon bl.ick.
and cadmium sulfate) are carcinogenic in humans or
animaIs.'O Additional studies of newspaper pressmen are
needed to verify the association with renal cancer reported here.
The finding in this study of an excess of 105% for
deaths due to cirrhosis agrees with the excess for deaths due to cirrhosis found by Lloyd et al.' This excess may in
part explain the low SMR seen for prostatecancer, as this inverse relationship has been reported previously." "
Several investigatorshave reported excess lung cancer
mortality among workers in the printing industry'ln
However the few previous studies of mortality among
newspaper pressmenexclusively have observed no excess of lung cancer,' z* and this report substantiates such findings. Although air levels of oil mists in the pressrooms of
newspaper plants have been measured as high as 3
)'mglcu m2* these high levels apparently create no unu-
sual lung cancer risk. The finding of an increasein deaths from oral cancer by Lloyd et ai' was also not subswnti-
ated. The choice of general population death rates for
calculating the expected number of deaths in this OC-
cupational group introduces an overestimationof expect-
ed mortality. This observed deficit of deaths has been called the "healthy worker effectwa4 Thus, the slightly
-Tabla 2. Distribution by Age Staned to Work as Pressman.
A90 Started a
Work
< 24
25-34
35 +
Unknown Total
Aliw No.
A56 358
63 0 887
K
53 40 7 0 100
Doad
No. %
112 32 104 29 42 12 96 27 354 100
Status Unknown No. K
47 39 50 42 19 16 43 120 100
Journal of Occupational MedicineNol22. No. 8/August 1980
-
543
I^
Cause at Death
.- . - - ~"--I_
-_-_I
-[able 2 . C a l i s ~S p e c t i c Mortalitv Experience A m o n g Cohort of Newspaper P r e s s m e n
____I.""^ I
IC0 Code
Ob%
Ex 0
i.C 3 U > l S
AII mi1c;naqr neooiasm buccal ana onarvnaiai Lung ana iracnea
Esoonaceal Stornacn
Colon- kcrum
Liver
Pancreas Prostate Kioney Blaaoer Leukemia Olner iinanat c and nenlJt3oc!elic ne03 asrns Ca.oic.asc3 j r disezse lntiuenra 2nd pneumonia
Ulcer Hernia inleslinal obslrucuon Cirriosis :.I L ` I ~ Sana n e S l is Accqoenis Suiciae anc nomicioe
All otner causes
162
' 50
'51 153 154
`55
157 185 i89 186 204 207 202 233 208 239 353 456 170 4d6 531.532 550 560 571 582 594 EB00-929 E950-969
2:
5
3
1
5 195
1 1 17
I2 12 25
lo E
'f
*. ^*
69
GC 3s
j: 16 24
28
39 205 8
96 26 12
- -8 3
1.
21 a
92
44 0
I
SMR I
149 2 70 90 112 I29
74
303'
85 247. 129 95
72 36 83 20:236 60
131
56t
*p<005 tp<O01
I decreased total mortality of the web pressmen is not sur- 9 Browning E: Toxicitv and Metabolism of Industrial Solvents
prising and i s similar to results from many other studies of industrial populations." 27 "
Follow-up was attempted on all individuals. including those who had left the union to work at other occupa-
New York: Elsevier Publishing Co.. 1965.pp 3-65.
10.Kav K: Toxicologic and cancerogenic evaluation of chemicals
used in the graphic arts industries. Clin Toxtco/ 9:359-390.1976. 11. Blot Wl and Fraumeni I F lr: Geographic patterns of bladder
cancer i n the United States. I Natl Cancer lnsf 61:1017-1023.1978.
tions or in nopunion shops. However. as most deaths were obtained from among those entitled to union death benefits, following the others only to the point where they left the union might introduce a bias. One might miss
12. Hoover R and Fraumeni I F Ir: Cancer mortality in US. coun-
ties with chemical industries. Environ Res 9:19&207. 1975. 13. Badger CM: The Chemical Basis of Carcinogenic Activity.
Springfield. Illinois: C C Thomas. 1962. p 35. 14.Hirsch CH: Effect of chronic lead treatment on renal function
deaths due to chronic diseases (if an individual had left Toxrcol Appl Pharmacol 25:84. 1973.
the union because of ill health) but most likely not deaths due to acute diseases. If such a bias does exist, it is unlike
Iy that it would create any false associations. but it could mask some that do exist.
15. Brernner D A and Tange ID: Renal and neoplastic lesions after injection oi N-h`ldiacetvlbenzidine. Arch Pathol 81:146.1%.
16. Clanu CM: Cirrhosis and carcinoma of the prostate gland. /
Urol 911291-2931.964 17.Keiler A Z Liver cirrhosir. tobacco. alcohol.and cancer among
The author' w r h ro thank M'iiildrn F Mdrtin and LWJ L Vorhm or.rh- 1nrt.r-
nrriondl Printing and Craohic Comrnun~c~rionUrnwn and lohn hd1w.m or
the Lo) Angeiei Prer5men's L O C J ~18 lor rhcir dlSiStdnCC in rhn .rudy
This work was conducted under Grant No C A 14089 01 the hational Insii. fUtC Of Hedlth
blacks. / Natl M e d ASSOC7O:57j-5tOu1)9.78 18. Kennawav EL and K,ennawav Nhl A further studv of the im
cidence ofcancer or the lung and Iawnx Er / Cancer 1:260?98.1947. 19. Ask-Upmark E: Bronchial carcinoma in printing workers. Dir
Chesr 27:427-435.1955. 20. Creenberg M: A prooortional mortality study of a group of
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