Table 1

Long-term effectiveness of diabetes prevention trials

StudyInterventionnIntervention duration (years)Risk reduction (%)*Total follow-up time (years)Follow-up risk reduction (%)CVD events/total mortality reduction (%)
Da-Qing Study China (6,10)Diet
Exercise
Diet + exercise
Control130
141
126
133631
46
4220432/4
DPS Finland (1,14,15)Diet + physical activity
Control265
2573.2587434/43
DPP U.S. (16,17)Diet + physical activity
Metformin
Placebo1,079
1,073
1,0822.858
311034No data
  • *During the randomized trial period.

  • †Higher in the intervention than control group.