Due to confidentiality restrictions, information on using the ADD Health data is available only to registered users on our London server.

All users will see two icons on their London desktop:

• "add_health_london_faq" contains information on use restrictions and file locations
  
• "Data Tips and Tools" contains tips and techniques for using the data contributed by PRI programmers and other PRI users. We welcome any contributions to this page. Contact Mona Ostrowski to contribute