Table 2 CKD prevalence, model sensitivity, specificity, positive predictive value and negative predictive value estimates for CKD prediction at the time of diagnosis for different life stage groups.

From: An early prediction model for canine chronic kidney disease based on routine clinical laboratory tests

Life stage

Sensitivity (%)

Specificity (%)

Prevalence (%)

PPV (%)

NPV(%)

Adult

62.42

99.69

0.15

22.86

99.94

Mature

82.40

97.99

0.48

16.57

99.91

Senior

94.99

92.88

1.46

16.47

99.92

Geriatric

98.90

69.52

5.21

15.14

99.91

  1. Adult is defined as 1.5 to 6.5 years, mature as 6.5 to 9.75 years and under, senior 9.75 to 13 years, and geriatric as over 13 years. Disease prevalence is estimated from the life stage groups within the study population and model performance determined using the test data set.