In 2012, the NHANES National Youth Fitness Survey (NNYFS) was conducted in conjunction with the National Health and Nutrition Examination Survey (NHANES) in response to the need for data on physical activity and fitness levels in children and teens. No geographic location was released in order to protect the identification of respondents for the NNYFS survey. State and county information could be obtained through the Research Data Center (RDC). It is desirable, however, to use a finer level of geography to spatially analyze the NHANES data and to answer various important research questions about the effect of geography on health.
Therefore, National Center for Health Statistics (NCHS) entered into an agreement with U.S. Department of Housing and Urban Development (HUD) to use its geocoding services to assign geographic codes to the NHANES address data. HUD geocoded the NNYSF survey data to the 2000 and 2010 censuses, respectively.
All survey participants have a geocoded record.
NNYFS collects residential household information for unique addresses of households containing at least one survey participant.
After geocoding the NNYFS survey data HUD provides QC documentation (see Appendix 1).
The NNYFS’ participants address data was submitted to HUD and using Geocode Service Center (GSC), was geo-enabled with latitude/longitude coordinates and other legal, statistical, and administrative geographies including census, postal, and other attributes.
Due to disclosure issues, this dataset is not available publicly. Access may be obtained through the NCHS Research Data Center (https://www.cdc.gov/rdc).
| RC2KX | Frequency | Percent | Cumulative Frequency | Cumulative Percent |
|---|---|---|---|---|
| 5 | 20 | 1.22 | 20 | 1.22 |
| 9 | 45 | 2.74 | 65 | 3.96 |
| S | 1575 | 96.04 | 1640 | 100.00 |
| LVL2KX | Frequency | Percent | Cumulative Frequency | Cumulative Percent |
|---|---|---|---|---|
| 4 | 29 | 1.77 | 29 | 1.77 |
| B | 16 | 0.98 | 45 | 2.74 |
| R | 1575 | 96.04 | 1620 | 98.78 |
| T | 20 | 1.22 | 1640 | 100.00 |