THIS CLEARANCE
REQUEST IS APPROVED ON THE CONDITION THAT THE INVESTIGA TOR
MONITORS THE EXPOSURE RATES IN THE CONTROL SERIES SO THAT THE STUD
WILL ATTAIN APPROXIMATELY 90 PERCENT POWER OF DETECTING A TWO-FOLD
INCREASE IN RISK DUE TO TOBACCO CHEWING AND THREE-FOLD INCREASE FOR
TH SUBJECTS USUALLY EMPLOYED IN ELECTRONICS.
Inventory as of this Action
Requested
Previously Approved
03/31/1986
03/31/1986
8,280
0
0
2,318
0
0
0
0
0
THIS CASE-CONTROL STUDY WILL IDENTIFY
RISK FACTORS FOR CANCERS OF THE ORAL CAVITY AND PHARYNX BY MEANS OF
A QUESTIONNAIRE ADMINISTERED TO 1500 CASES AND 2000 CONTROLS. THE
CONTROLS WILL BE SELECTED THROUGH TELEPHONE OR NEIGHBORHOOD
SCREENINGS OF ABOUT 20,000 PERSONS.
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.