Cognitive Interviewing Thank You Letter

DEPARTMENT OF HEALTH & HUMAN SERVICES Public Health Service

Centers for Disease Control and Prevention

National Center for Health Statistics

3311 Toledo Road

Hyattsville, Maryland 20782

Thank you

…for your assistance in testing our questionnaire. The information you provided helps us improve the quality of the data we disseminate to the American public. The final questionnaire will be used to collect data on health conditions across the United States. These data will be used by public health officials to identify future research, screening, and educational programs.

Of course, the information you provided will be held in strict confidence.

Again, we greatly appreciate your participation.

Sincerely,

Brian C. Moyer, Ph.D.

Director, National Center for Health Statistics