Table 2 Sensitivity and specificity as well as positive- and negative predictive values
Screening variable | Clinical Reference * | N Total | Sensitivity | Specificity | PPV** | NPV** |
|---|---|---|---|---|---|---|
CBG | VPG | 669 | 35/43 (81.4%) | 612/626 (97.8%) | 35/49 (71.4%) | 612/620 (98.7%) |
CBG | HbA1c | 656 | 31/68 (45.6%) | 566/588 (96.3%) | 31/53 (58.5%) | 566/603 (93.9%) |
VPG | HbA1c | 645 | 25/63 (39.7%) | 563/582 (96.7%) | 25/44 (56.8%) | 563/601 (93.7%) |