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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: J Perinatol. 2014 Mar 27;34(7):549–554. doi: 10.1038/jp.2014.52

Table 3.

Diagnostic value of decreased peripheral blood AMC as a test for NEC

No NEC NEC Total
>20% drop in AMC 54 41 95
Increased or ≤20% drop in AMC 137 19 156
Total 191 60 251
Value (95% CI)
Prevalence 0.24 (0.19–0.30)
Sensitivity 0.70 (0.57–0.81)
Specificity 0.71 (0.64–0.77)
Positive predictive value 0.43 (0.33–0.54)
Negative predictive value 0.88 (0.81–0.92)
Positive likelihood ratio 2.42 (1.82–3.21)
Negative likelihood ratio 0.44 (0.30–0.64)