Groups identified by decision tree models for men (Tehran Lipid and Glucose Study 1999–2012)
| Models | Groups | Definition (rules) | Probability* | Predicted class† |
|---|---|---|---|---|
| Model (1) | 1 | FPG≤4.9 and 2h-PCPG≤7.7 | 0.90 | Non-diabetic |
| 2 | 4.9<FPG≤5.3 and 2h-PCPG≤7.7 and WHtR≤0.6 | 0.72 | Non-diabetic | |
| 3 | FPG>5.3 and 2h-PCPG≤4.4 and age ≤43 | 0.67 | Non-diabetic | |
| 4 | 4.9<FPG≤5.3 and 2h-PCPG≤7.7 and WHtR>0.6 | 0.53 | Diabetic | |
| 5 | FPG≤5.3 and 2h-PCPG>7.7 | 0.70 | Diabetic | |
| 6 | FPG>5.3 and 2h-PCPG≤4.4 and age >43 | 0.68 | Diabetic | |
| 7 | FPG>5.3 and 2h-PCPG>4.4 | 0.79 | Diabetic | |
| Model (2) | 1 | FPG≤4.9 | 0.86 | Non-diabetic |
| 2 | 4.9<FPG≤5.3 and WHtR≤0.56 | 0.70 | Non-diabetic | |
| 3 | 4.9<FPG≤5.3 and WHtR>0.56 and FHD=‘no’ | 0.58 | Non-diabetic | |
| 4 | FPG>5.3 and 0.4<WHtR≤0.49and MAP≤92 | 0.75 | Non-diabetic | |
| 5 | 4.9<FPG≤5.3 and WHtR>0.56 and FHD=‘yes’ | 0.78 | Diabetic | |
| 6 | FPG>5.3 and WHtR≤0.45 | 0.56 | Diabetic | |
| 7 | FPG>5.3 and 0.45<WHtR≤0.49 and MAP>92 | 0.67 | Diabetic | |
| 8 | FPG>5.3 and≤0.49≤WHtR<0.56 | 0.74 | Diabetic | |
| 9 | FPG>5.3 and WHtR>0.56 | 0.84 | Diabetic |
Model (1) was developed based on 15 variables which included 2h-PCPG.
Model (2) was developed based on 14 variables (2h-PCPG was excluded).
*The percentage of population in the defined subgroup, which can be interpreted as probability of an outcome.
†Predicted outcome for men who belong to the defined subgroup.
2h-PCPG, 2-hour postchallenge plasma glucose (mmol/L); FHD, family history of diabetes; FPG, fasting plasma glucose (mmol/L); MAP, mean arterial blood pressure (mm Hg); WHtR, waist-to-height ratio.