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Data for routine health-care contacts and medication use were collected directly from general practitioner (GP) records for both groups. Antidiabetes and antihypertensive medications, suspended on commencing the intervention and reinstated as necessary under clinical guidelines, were costed from observed individual participants’ treatments. The intervention group had significantly lower cost per participant than did controls for antidiabetes drugs (mean difference£ 120, 95% CI 78–163), antihypertensive drugs (£ 14, 8–22), diabetes-related GP visits (£ 17, 8–26), and diabetesunrelated practice nurse visits (£ 6, 1–11). No significant differences were observed for other care contacts. Reduced routine resource use thus provides some cost offset within the first year. Mean 1-year management cost per participant (intervention delivery plus routine

NHS costs; n= 149 in both groups) was£ 1913 (SD 1161) versus£ 846 …