Cost-Effectiveness of 2 Support Models for a Healthy School Initiative.

Background: In school year (SY) 2014-2015, 128 schools in 24 districts and 14 states were randomly assigned to receive either onsite or online support to implement a school-based wellness program. The objective of this study was to assess the cost-effectiveness (CE) of the 2 models of implementation support: onsite and online.

Methods: We adapted the "ingredients method" for the CE analysis.