Costs of the intervention.

Assumes maximum number of clusters involved in training/PSF sessions With 15 participants attending/cluster = £13·84/participant/year Recruitment and coordination costs are not included Nurse is band 6 if works within a full multidisciplinary diabetes specialist service-otherwise band 7 Peer support meeting costs are from PSF claims Booklet costs include those given to PSFs who did not subsequently act as a PSF.Few PSFs used the RAPSID mobile phones, preferring to use their own, so only the ongoing costs are included.Costs of the intervention.