A screening test wished to improve the diagnostic ability to identify Zika-infected fetuses in pregnancy rather than after birth. A total of 1562 pregnant women (carrying one baby each) in Miami were tested. A total of 732 babies truly had Zika; 583 of whom screened positive. A total of 830 babies were truly negative, 730 of whom screened negative for the virus. Please report answers as a percent with two decimal places.

1. What is the sensitivity? %
2. What is the specificity? %
3. What is the positive predictive value? %
4. What is the negative predictive value? %

Answer rating: 100% (QA)

The following formulae can be used to determine sensitivity specificity positive predictive value PP... View the full answer