Number of persons aged 18 and over who access the Internet.
Number of persons aged 18 and over.
From the 2007 Health Information National Trends Survey:
Do you ever go on-line to access the Internet or World Wide Web, or to send and receive e-mail?
HINTS is a biennial, cross-sectional survey of a nationally-representative sample of American adults that is used to assess the impact of the health information environment.