Table 5. Performance of decision rules for identifying cases of diabetes.

TPR	PV+	TNR	PV−	% of population	Screening rule
100.00	3.46	17.5	100.00	83.00	1. One risk factor
99.67	4.08	30.65	99.97	70.22	2. One risk factor in those ≥30 yr
98.30	4.79	42.20	99.88	58.97	3. Any two risk factors
97.97	5.26	47.88	99.88	53.44	4. Any two risk factors in those ≥30 yr
83.97	5.75	58.89	99.19	42.35	5. Anyone ≥45 yr
99.61	3.69	22.22	99.95	78.42	6. Anyone ≥30 yr
88.60	5.50	54.47	99.38	46.78	7. White ≥45 or black ≥35 or Mexican American ≥32 (or others ≥45) yr
95.01	4.61	41.22	99.64	59.84	8. Whites ≥40 or non-White ≥30 yr
85.85	4.61	46.88	99.11	54.07	9. BMI ≥ 25 kg/m2
100.00	3.76	23.55	100.0	77.14	10. Whites ≥40 or non-white ≥30 yr) or BMI ≥25 kg/m2
48.93	8.19	83.53	98.20	17.42	11. HDL ≤35 or triglycerides ≥250 mg/dl
98.45	4.34	34.90	99.87	66.07	12. Whites ≥40 or non-white ≥30 yr) or (HDL ≤35 or triglycerides ≥250 mg/dl)
1.75	13.99	99.68	97.16	0.36	13. Gestational diabetes
96.09	4.61	40.99	99.72	60.08	14. (Whites ≥40 or non-white ≥30 yr) or gestational diabetes

TPR, true-positive rate or sensitivity; PV+, predictive value positive; TNR, true-negative rate or specificity; PV−, predictive value negative.