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. Author manuscript; available in PMC: 2011 Jul 13.
Published in final edited form as: Lancet. 2009 Oct 29;374(9702):1677–1686. doi: 10.1016/S0140-6736(09)61457-4

Table 3.

Incidence (cases per 100 person-years) of diabetes during DPP, bridge period, and DPPOS

ILS group Metformin group Placebo group
DPP (2·8 years) 4·8 (4·1–5·7) 7·8 (6·8–8·8) 11·0 (9·8–12·3)
End of masked treatment (3·2 years) 5·0 (4·3–5·8) 7·7 (6·8–8·8) 10·8 (9·7–12·0)
Bridge period 5·5 (4·1–7·5) 10·6 (8·4–13·2) 7·8 (5·9–10·3)
DPPOS (n=2766) 5·9 (5·1–6·8) 4·9 (4·2–5·7) 5·6 (4·8–6·5)
Combined incidence 5·3 (4·8–5·8) 6·4 (5·9–7·1) 7·8 (7·2–8·6)

Data are incidence rates (95% CI). The bridge period was Aug 1, 2001, to Aug 31, 2002.

ILS=intensive lifestyle intervention. DPP=Diabetes Prevention Program.