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Table 2 Undiscounted per capita direct medical costs of care outside the DPP/DPPOS by intervention group and study year, and distribution of undiscounted per capita 10-year direct medical costs of care outside the DPP/DPPOS by intervention group and type ($)

From: The cost-effectiveness of diabetes prevention: results from the Diabetes Prevention Program and the Diabetes Prevention Program Outcomes Study

Costs by year Lifestyle Metformin Placebo
 1-DPP 1,423 1,517 1,617
 2-DPP 1,780 1,837 2,045
 3-DPP 1,979 1,854 2,018
 4 (Bridge) 2,059 2,087 2,330
 5-DPPOS 2,015 2,174 2,543
 6-DPPOS 2,519 2,493 2,636
 7-DPPOS 2,645 3,061 2,875
 8-DPPOS 3,444 3,607 3,319
 9-DPPOS 3,291 3,298 3,265
 10-DPPOS 3,406 3,686 4,822
TOTAL 24,563 25,615 27,468
Costs by category Lifestyle Metformin Placebo
 Outpatient visits 6,845 7,145 7,325
 Inpatient care 5,631 5,817 6,856
 ER visits 1,941 1,690 1,825
 Urgent care visits 1,697 1,945 1,811
 Calls to physicians 712 742 712
 Prescription medications 6,490 6,619 6,959
 Self-monitoring supplies and laboratory tests for diabetes 1,248 1,628 1,978
TOTAL 24,563 25,615 27,468