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The National Immunization Survey
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Frequently Asked Questions by Respondents to the
National Immunization Survey (NIS Adult)

What is the purpose of the survey?

Who uses this information?

How are telephone numbers selected?

Is there a letter that explains the purpose of the study?

What is the legal authorization for the study?

How is confidentiality of information assured?

What information is available about immunizations and about places that provide immunization shots?

What is the purpose of this study?
This study is designed to help researchers better understand why some adults choose not to get vaccinated for preventable diseases. The data collected from households like yours will
help us to understand if certain groups of the population have lower vaccination rates than others. Health care agencies will use this data to ensure that resources are allocated accordingly. Local, state and federal health care agencies will use the information collected to improve vaccination rates among adults (in your area).
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Who uses this information?
The National Center for Health Statistics and the National Center for Immunization and Respiratory Diseases (both agencies are part of the Centers for Disease Control and Prevention) will use the results of the study to improve the health and well-being of adults. Through monitoring of this information, Centers for Disease Control and Prevention are able to assess whether immunization goals are being reached. No personal identifiers from survey participants will be released or published.
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How are telephone numbers selected?
Numbers are selected in one of two ways. A computer scientifically selects some telephone numbers and others were included as a result of recent participation in the National Health
Interview Survey. Regardless of how a number is included, each is selected to represent the community, and since one cannot replace another, input is key to our success.
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Is there a letter that explains the study?
Most households selected for the study receive a letter in advance that explains the purpose of the study. This letter is from Dr. Edward J. Sondik, Director of the National Center for
Health Statistics. Not all selected households receive a letter in advance, however, because the study does not have the mailing address for all telephone numbers selected for the study. You may view the letter or contact the study's telephone survey researchers at 1-800-993-0495 to have a letter sent to your home or to ask us questions about the survey.
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What is the legal authorization for the study?
The study, which is conducted on behalf of the U.S. Centers for Disease Control and Prevention, is authorized by the Public Health Service Act [Sections 306 & 2102(a)(7)]. You may call our toll-free number 1-800-223-8118 to verify the legitimacy of this survey and obtain more information. Please mention protocol #2006-04.
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How is confidentiality of information assured?
Confidentiality is mandated by law. Findings will be issued only in summary form and U.S. law requires that the name of study participants not be associated with any answers. Unauthorized disclosure of confidential information is punishable by fines ranging from $5,000 to $50,000 and could result in imprisonment for up to 5 years. Also, a section of the NCHS Staff Manual on Confidentiality further explains the prohibitions against disclosure of confidential information.
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What information is available about immunizations and about places that provide immunizations?
For more information regarding vaccinations or the phone number of a doctor or clinic near you, please call the Centers for Disease Control and Prevention Information Contact Center at 1-800-232-4636 (1-800-CDC-INFO) and select option 1. For more information about immunization, please visit the web site for the National Center for Immunizations and Respiratory Diseases.
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This page last reviewed August 19, 2008

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U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES
Centers for Disease Control and Prevention
National Center for Health Statistics
Hyattsville, MD
20782

1-800-232-4636