6  Formulario

\(RP = \frac {a / (a + b)} {c / (c + d)}\)

\(RR = \frac {a / (a + b)} {c / (c + d)}\)

\(OR = \frac {a / c} {b/d}\)

\(IC = exponencial[ln(OR\phantom{0} ó \phantom{0} RR) ± (z{\alpha_{1/2}} · ee )]\)

\(ee (error\phantom{0} estandar) = \sqrt(1/a) + (1/b) + (1/c) + (1/d)\)

\(Frecuencias\phantom{0}esperadas = \frac{\sum(f_i) . \sum(c_i)} {N}\)

\(X^2_{yates} = \sum^k_{i=1} \frac{ (|O_i - E_i| - 0.5)^2} {E_i}\)

\(\phi = \sqrt\frac{X^2}{N}\)

\(\phi = \frac{a · d - b · c}{\sqrt(a + b) · (c + d) · (a + c) · (b + d)}\)

\(Exactitud = \frac{a+d}{N}\)

\(Sensibilidad = \frac{a} {a + c}\)

\(Especificidad = \frac{d} {b + d}\)

\(Valores\phantom{0}Predictivos\phantom{0}Positivos = \frac{a} {a + b}\)

\(Valores\phantom{0}Predictivos\phantom{0}Negativos = \frac{d} {c + d}\)