Appendix 1.

Estimated intervention costs

Cost item	Cost (£)
Total project worker time (inclusive of on-costs, supervision, and training time) 1015 hours @ £10.57	10 728.55
Management team/supervision time: 52 weeks at 2 hours per week @ £19.98/h (including on-costs)	2077.92
Room cost/reception cover (including hospital overheads at 100%)	2481.72
Stationery	135.00
Telephone (estimated)	500.00
Secretarial support: 52 hours (1/week) @ £9.80 (including on-costs)	509.60
Training (motivational interviewing), as charged	1500.00
Training (internal) 4 hours × 4 trainers × (average) £34.80/h (including on-costs)	556.80
GP costs (including on-costs) for identification and referral of patients (5 minutes administrator £14.60/hour and 5 minutes GP time £60.63/hour) × 72 patients	451.38
Total cost	18 940.97
Cost per intervention	263.07