We collect and store access information for statistical purposes. The information collected includes standard server log information, such as your computer's domain name or IP address, the date and time you access our site, the pages you viewed, the type of browser and operating system you used to access our site, and the external Web site from which you followed a link to our site, if applicable. Our website logs do not contain information that can be used to personally identify an individual visitor, and we make no attempt to link them with such information.

When you use this tool to create new randomized trial allocations, we store your output files for up to twenty days after your results are generated. This allows you to download them at your convenience. Your email address and trial parameters may be stored for a longer period of time, in order to better understand how this tool is used and to comply with auditing requirements.

By sending us an email message, you may be sending personal information (e.g., your name, address, and email address). We will store this information in order to respond to your request or otherwise resolve the subject matter of your email. Please note, however, that email messages are sent over the Internet as free text and are not secure from interception by unauthorized third parties.