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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: J Pediatr Surg. 2016 Dec 5;52(8):1273–1279. doi: 10.1016/j.jpedsurg.2016.11.045

Table 2.

Comparison of test characteristics of ultrasound between the pre- and post-template period.

2014 2015 p-value
Sensitivity 78.3% (70.4 – 84.8) 83.6% (76.0 – 89.6) 0.271
Specificity 88.0% (83.3 – 91.7) 89.0% (85.3 – 92.1) 0.689
PPV 78.3% (70.4 – 84.8) 73.3% (65.3 – 80.3) 0.327
NPV 88.0% (83.3 – 91.7) 93.8% (90.6 – 96.1) 0.014*
Accuracy 84.5% (80.5 – 88.0) 87.6 (84.3 – 90.4) 0.186
*

95% CI in brackets, Indicates statistical significance, PPV=positive predictive value, NPV=negative predictive value, CI=confidence intervals