Every 3 years, the Millennium Cohort Family Study team launches a new survey to gather data towards its mission of gaining "a more complete understanding of the military experience and its resultant impact on the health and well-being of service members and their families".

For 2014, the survey was redesigned and went through a complete rewrite. The 2011 survey was based on CakePHP 1.2 (later updated to 1.3) and the 2014 survey uses the CakePHP 2 framework for historical consistency. To encourage code reuse, the site is powered by the mcSurvey project, which is intended to power several Millennium Cohort (and related) surveys. The flexibility of this project, combined with the CakePHP templating, allows for very different surveys to share same basic functionality such as administrative tools (survey reset, survey print, data view) and logging features.

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