Table 4.
AUCs in the sensitivity and ancillary analyses
| Undiagnosed DM | Undiagnosed preDM | |||
|---|---|---|---|---|
| ADA | CDC | ADA | CDC | |
| Original model | .766 | .731 | .718 | .697 |
| Task 1: Different outcome definition | ||||
| Fasting glucose alone | .765 | .729 | .717 | .682 |
| A1C alone | .785 | .738 | .733 | .720 |
| 2-hour glucose alone | .768 | .743 | .746 | .729 |
| Task 2: Age subgroups | ||||
| Age ≥ 60 years old | .637 | .598 | .575 | .577 |
| < 60 years old | .774 | .723 | .701 | .666 |
| Task 3: Modification in predictor | ||||
| Clinical measures: No blood pressures available |
.764 | NA | .717 | NA |
| Obesity: Add WC as new predictor |
.773 | .760 | .721 | .709 |
| Combine BMI+WC in obesity categories | .767 | NA | .719 | NA |
| Over vs. normal/underweight based on self-assessment | .744 | .718 | .705 | .680 |
| BMI | .772 | .757 | .719 | .704 |
| WC | .774 | .761 | .720 | .709 |
| Waist-to-height ratio | .784 | .771 | .724 | .707 |
| Physical activity: >30 mins/day of recreational activity |
.767 | .732 | .718 | .698 |
| Add ‘hours of sedentary activity’ as new predictor | .766 | .731 | .719 | .700 |
| Medical history: No pregnancy data | .762 | .731 | .717 | .697 |
| No family DM data | .760 | .722 | .717 | .693 |
| Task 4: Additional predictor added | ||||
| Race (Black, Hispanic, White, Others) | .779 | .746 | .723 | .705 |
| HDL cholesterol | .773 | .746 | .722 | .708 |
| LDL cholesterol | .769 | .738 | .738 | .710 |
| Total Cholesterol | .766 | .733 | .720 | .702 |
| Alcohol (average number of drinks/day) | .776 | .741 | .721 | .697 |
| Smoking (current vs. others) | .769 | .738 | .714 | .692 |
| (average number of cigarettes/day) | .764 | .752 | .719 | .689 |
| Healthy diet (in 5 levels) | .769 | .738 | .719 | .701 |
| Total sugar | .768 | .735 | .718 | .700 |
| Total fat | .769 | .734 | .718 | .699 |
Predictors were included as continuous variable in logistic regression, unless stated otherwise.
Analyses were weighted with medical exam weight.
Largest AUCs in each model under different tasks are in bold and smallest AUCs are in italicized bold.
Sample sizes of complete data and types of variables (e.g., continuous vs. binary) are different so comparisons need some caution.
DM denotes type 2 diabetes mellitus; NA: not applicable; AUC=under the receiver-operating-characteristic curve; BMI=body mass index; WC=waist circumference.