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Table 2 Predictive values (95% CI) for caries increment (ΔDMFS) at the cut-off point "81-100% chance of avoiding caries" in a group of 392 school children assessed by total and reduced Cariogram.

From: Caries risk assessment in school children using a reduced Cariogram model without saliva tests

Predictive values

Total Cariogram

Reduced Cariogram

  

no MS

no buffer

no secretion rate

no MS, no buffer, no secretion rate

Sensitivity

0.73

(0.65-0.81)

0.84

(0.77-0.90)

0.79

(0.72-0.86)

0.77

(0.70-0.85)

0.90

(0.85-0.95)

Specificity

0.60

(0.54-0.66)

0.47

(0.41-0.52)

0.51

(0.45-0.57)

0.49

(0.44-0.55)

0.20

(0.15-0.25)

PPV

0.45

(0.38-0.52)

0.41

(0.35-0.47)

0.42

(0.35-0.48)

0.41

(0.34-0.47)

0.34

(0.28-0.39)

NPV

0.83

(0.78-0.88)

0.86

(0.81-0.92)

0.85

(0.79-0.90)

0.83

(0.78-0.89)

0.82

(0.73-0.91)

PLR

1.80

(1.50-2.2)

1.60

(1.40-1.80)

1.60

(1.40-1.90)

1.50

(1.30-1.80)

1.10

(1.00-1.20)

NLR

0.45

(0.33-0.62)

0.36

(0.23-0.54)

0.41

(0.28-0.59)

0.45

(0.32-0.64)

0.50

(0.28-0.90)

  1. PPV = positive predictive value; NPV = negative predictive value;
  2. PLR = positive likelihood ratio; NLR = negative likelihood ratio