Thymic Squamous Cell Carcinoma
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چکیده
We agree. \Ve used a figure from Table 6 (If the article by Lemeshow et al, which was for a restricted set (If patients. The correct overall classification from the study was 84.9 percent, achieved with the patients frolm a single holspital as compared with a correct classificatioln (If 88. 1 percent with APACHE III on a 40hospital data base. We emphasize, however, that because ofthe bias inherent in trying to compare correct classificatioln rates across data files that have varying baseline (Iutco)Ine rates, we prefer receiver operating characteristic (ROC) areas. For the specific issue (If predicting hospital death rates, ROC areas are even more tiseful, since the conventioanal thresholld (If a 0.50 risk of death used in the above correct classification calctilations is arhitrar@: The APAChE III system achieved a 0.90 ROC area. We also Woltild like to) take this opportunitY tel correct one error in (Iti@APAChE III article. The sex ratio was reversed. The correct distribution of sex across ICU admissions is 55.2 percent male and 44.8 percent female Sex has no relationship with outcome and is not used in an@APAChE outcome predictions.
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تاریخ انتشار 2006