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%)

*VPG ≥7.0 mmol/L and HbA1c ≥7%.

**PPV Positive predictive value, NPV Negative predictive value.

Muktabhant et al.

Muktabhant et al. BMC Public Health 2012 12:349   doi:10.1186/1471-2458-12-349

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