逻辑回归
医学
小细胞性贫血
缺铁性贫血
内科学
贫血
红细胞
红细胞
地中海贫血
胃肠病学
低色素性贫血
作者
Yuan Zhou,Jibo Zhang,Chao Wang,Ling Zhou,Lu Zhou,Dan Ou,Dan Peng
摘要
Abstract Introduction Thalassemia traits and iron deficiency anemia are the most common types of hypochromic microcytic anemia with similar clinical and laboratory features. It is vital to establish a new screening model based on HbA 2 levels and red cell indices for the differentiation of TT from IDA in hypochromic microcytic anemia cases. Method The data comprised of the red blood cell indices and HbA 2 prenatal diagnostic test results of 810 individuals who were identified to conform to the following criteria: MCV < 80 fl or MCH < 26 pg. We launched a new model consisting mainly of significative red cell indices and HbA 2 levels, as well as proposing cutoff values by using decision trees and logistic regression analyses. Next, we evaluated our new method by comparing the sensitivity, specificity, positive, and negative predictive values with those of the previous formulas. Results We put forward a new model and compared it with 5 efficient formulas. The new model exhibited the highest accuracy (0.918), with its sensitivity and specificity calculated as 0.917 and 0.921, respectively. Our new model's Youden index was 0.838, which is higher than the other formulas' Youden indices. Conclusions The new screening model, based on HbA 2 levels and red cell indices, is suitable for the screening of thalassemia patients in the hypochromic microcytic anemia group and has the best efficiency in distinguishing TT and IDA.
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