Official websites use
.gov
A .gov website belongs to an official government organization in the United States.
Secure
.gov
websites use HTTPS
A
lock
(
)
or
https://
means you’ve safely connected to the
.gov
website. Share sensitive information only on official, secure websites.
A specification is a measure's instructions addressing data elements, data sources, point of data collection, timing and frequency of data collection and reporting, specific instruments used (if appropriate), and implementation strategies.