The Radiation Epidemiology Branch and
the University of Minnesota have followed a nationwide cohort of
146,022 U.S. radiologic technologists (USRT) since 1982 to assess
cancer and other disease risks associated with long-term repeated
low doses of ionizing radiation. The USRT Study is the largest
cohort of medical radiation workers studied to date and the only
one with substantial numbers of women, extensive covariate data,
incident and fatal cancer and other outcomes, estimates of
individual historical occupational radiation doses, personal
medical radiation doses, and personal and residential solar
ultraviolet radiation (UVR) doses. Three OMB-approved
questionnaires have been administered during 1983-2005 along with
the collection of biospecimens for breast and thyroid cancer cases
and comparison subjects. Study objectives for the next five years
are to: (a) assess risks of cancer and other diseases from
long-term low-dose occupational and personal medical radiation
exposures; (b) assess risks of cancer and other diseases from
occupational exposure to emerging and evolving radiologic
modalities (i.e. nuclear medicine, interventional radiography); (c)
assess risks of skin and other cancers from solar ultraviolet
radiation exposures; (d) replicate main genotype effects for breast
cancer reported from genome-wide association studies (GWAS) and
evaluate genetic determinants for thyroid and skin cancers; and (e)
evaluate gene-radiation and ionizing-ultraviolet radiation
interactions for breast, thyroid, skin and other cancers. A fourth
questionnaire survey will collect information on work history with
nuclear medicine and interventional radiography procedures to
improve dosimetry, new cancer and other disease outcomes, and other
disease risk factors to further clarify the role of radiation and
other factors in risks of cancer and other disease incidence and
mortality.
US Code:
42
USC 411 Name of Law: Public Health Service Act
On behalf of this Federal agency, I certify that
the collection of information encompassed by this request complies
with 5 CFR 1320.9 and the related provisions of 5 CFR
1320.8(b)(3).
The following is a summary of the topics, regarding
the proposed collection of information, that the certification
covers:
(i) Why the information is being collected;
(ii) Use of information;
(iii) Burden estimate;
(iv) Nature of response (voluntary, required for a
benefit, or mandatory);
(v) Nature and extent of confidentiality; and
(vi) Need to display currently valid OMB control
number;
If you are unable to certify compliance with any of
these provisions, identify the item by leaving the box unchecked
and explain the reason in the Supporting Statement.