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Fiabilidad de los predictores clínicos y de la biopsia de arteria ...

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<strong>Fiabilidad</strong> <strong>de</strong> <strong>los</strong> <strong>predictores</strong> <strong>clínicos</strong> y <strong>de</strong> <strong>la</strong> <strong>biopsia</strong> <strong>de</strong> <strong>arteria</strong> temporal en el diagnóstico <strong>de</strong> <strong>la</strong> arteritis <strong>de</strong> célu<strong>la</strong>s gigantes<br />

Joan Brunsó Casel<strong>la</strong>s<br />

Se observa asociación con el resultado positivo <strong>de</strong> <strong>la</strong> BAT ( p= 0.000).<br />

12- ANEMIA<br />

Hemoglobina < 12 g/dl en varones / < 11 g/dl en mujeres.<br />

El 45.07% <strong>de</strong> <strong>los</strong> pacientes con BAT positiva presentaban anemia (fig. 61).<br />

250<br />

200<br />

150<br />

100<br />

50<br />

0<br />

32<br />

76<br />

39<br />

195<br />

Anemia si Anemia no<br />

Figura 61: Diagrama que muestra <strong>la</strong> distribución <strong>de</strong> <strong>los</strong> pacientes según si presentaron<br />

anemia. p= 0.11<br />

106<br />

[95% Confi<strong>de</strong>nce Interval]<br />

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Prevalence Pr(A) 21% 17% 25.5%<br />

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Sensitivity Pr(+|A) 45.1% 37.8% 54.5%<br />

Specificity Pr(-|N) 71.95% 61.9% 79.4%<br />

ROC area (Sens. + Spec.)/2 .585 .498 .669<br />

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Likelihood ratio (+) Pr(+|A)/Pr(+|N) 1.61 1.4 2.2<br />

Likelihood ratio (-) Pr(-|A)/Pr(-|N) .66 .553 .856<br />

Odds ratio LR(+)/LR(-) 2.41 1.98 2.79<br />

Positive predictive value Pr(A|+) 29.62% 22.2% 36.2%<br />

Negative predictive value Pr(N|-) 83.33% 76.7% 88.8%<br />

BAT+<br />

BAT -<br />

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