Figure 2From: Improving access to preparatory information for children undergoing general anaesthesia for tooth extraction and their families: study protocol for a Phase III randomized controlled trial Phase III RCT: flow diagram showing recruitment, randomization, and group equivalence measures. For information on the Rutter Scale see [25]. FIS, Facial Image Scale; GA, general anaesthetic; MCDAs, Modified Child Dental Anxiety score.Back to article page