Data-analysis reading 2 by 2 table Horizontally probability BM+ if fever+ = 20/110 = 18% PV+ = A / A + B probability BM - if fever- = 70/90 = 78% PV- = D / C + D Vertically probability fever+ if BM+ = 20/40 = 50% SE = A / A + C probability fever- if BM- = 70/160 = 44% SP = D / B + D What numbers do you think are most useful in practice (PV+ and PV- or SE and SP).
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