# Sample Size and Sensitivity/Specificity [closed]

1,765 patients were given a positive/negative screening test for a disease.

N = 415 patients tested positive

N = 1,350 patients tested negative

Due to constraints, not all 1,765 patients were given the definitive disease diagnostic test; clinicians had to pick a sample size (95% CL, 5% MoE) from the positive and negative groups.

n = 200 patients tested positive

n = 300 patients tested negative

Does this mean that the True Positives (TP), FP, FN, and TN values have a +/- 5% MoE? So the 89% True Positives is 84 – 94%?

• Hi all...any help would be greatly appreciated! – Harper Apr 5 '16 at 4:29
• If this is a homework question, please add the self-study tag and read its wiki – Marquis de Carabas Apr 6 '16 at 8:20
• Thanks for adding the tag. However, in addition to reading the tag wiki, you also needed to modify your question accordingly (as described in the guidelines there). The closure reason also outlines the problem. – Glen_b -Reinstate Monica Apr 11 '16 at 8:22