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. Author manuscript; available in PMC: 2016 Apr 9.
Published in final edited form as: Diabetes Care. 2015 Nov;38(11):2177–2187. doi: 10.2337/dc15-1218

Table 2. Cumulative incidence of type 2 diabetes in metabolic health and body mass index categories.

BMI category BMI category cumulative incidence at 5 yearsa BMI category cumulative incidence at 10 years a Risk category Proportion of healthy or unhealthy individuals in each BMI category Relative risk within BMI category Risk category 5 year cumulative incidence (95% CI*) Risk category 10 year cumulative incidence (95% CI*)
Lean 0.3 % 0.8 % Metabolically
Healthy
Lean
0.82 1 0.2% (0.1 – 0.2%) 0.5% (0.5 – 0.6%)
Metabolically
Unhealthy
Lean
0.18 4.0 0.6% (0.6 – 0.8%) 2.2% (1.9 – 2.5%)
Over weight 0.8 % 2.7 % Metabolically
Healthy
Overweight
0.59 1 0.4% (0.3 – 0.5%) 1.3% (1.1 – 1.6%)
Metabolically
Unhealthy
Overweight
0.41 3.4 1.4% (1.3 – 1.5%) 4.5% (4.2 – 4.9%)
Obese 1.8 % 5.9 % Metabolically
Healthy
Obese
0.38 1 1.0% (0.8 – 1.1%) 3.1% (2.6 – 3.5%)
Metabolically
Unhealthy
Obese
0.62 2.5 2.4% (2.2 – 2.5%) 7.6% (7.3 – 8.0%)

BMI, body mass index; CI, confidence interval.

a

From the EPIC InterAct Study

*

derived via a probabilistic analysis, which simultaneously incorporates the uncertainty in each of the parameter estimate (openBUGS, 20000 simulations)