Table 2

Test characteristics of HbA1c, urinalysis, fructosamine, random glucose, and 1-h GCT for predicting dysglycemia (prediabetes or diabetes)

ThresholdSensitivity (%)Specificity (%)Positive likelihood ratioPositive predictive value (%)Negative predictive value (%)
Urinalysis (n = 218)
 Positive2970.753459
HbA1c (%) (AUC 0.54 [95% CI 0.47–0.61]; n = 254)
 4.410001.0040
 4.79921.014175
 5.09391.034167
 5.370361.084263
 5.545571.044160
 5.732741.234562
 6.015921.865662
 6.57983.487061
 7.0210010060
Fructosamine (mmol/L) (AUC 0.55 [0.47–0.63]; n = 222)
 010001.0040
 1.2571290.994059
 1.4547601.174463
 1.6524882.085863
 1.8512997.918462
 2.05610010061
Random glucose (mg/dL) (AUC 0.66 [0.60–0.73]; n = 243)
 5010001.0040
 609911.004050
 709851.034178
 8097171.174489
 9087331.304779
 10055671.665369
 11030882.386265
 12014963.457062
 1307995.187861
 1403994.447560
1-h OGTT (mg/dL) (AUC 0.68 [0.61–0.74]; n = 241)
 6010001.0040
 709921.014175
 8096111.084280
 9090251.204578
 10077421.344873
 11063631.685371
 12044812.286168
 13031924.057366
 14021922.706563
 15013973.867262
 1609984.457562
 170410010061