Distribution of average cost across preschool and school-age pathways for each centre. Distribution of average cost across preschool and school-age pathways for each centre. This excludes data from the centre that found it difficult to record their pathways accurately using the questionnaire. Mark Galliver et al. bmjpo 2017;1:e000052 © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.