诊断试验阳性结果的似然比为: 金标准 + -检查 + a b- c d
(A)[a/(a+b)]/[d/(c+d)]
(B)[c/(a+c)]/[d/(b+d)]
(C)[a/(a+c)]/[d/(b+d)]
(D)[a/(a+c)]/[b(b+d)]
(E)[a/(a+b)]/[c/(c+d)]
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(A)[a/(a+b)]/[d/(c+d)]
(B)[c/(a+c)]/[d/(b+d)]
(C)[a/(a+c)]/[d/(b+d)]
(D)[a/(a+c)]/[b(b+d)]
(E)[a/(a+b)]/[c/(c+d)]