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:: Volume 4, Issue 4 (winter 2008) ::
Sci J Iran Blood Transfus Organ 2008, 4(4): 297-302 Back to browse issues page
Evaluation of sensitivity and specificity of Kerman index I and II in screening beta thalassemia minor
N. Cohan , M. Ramzi
Abstract:   (18670 Views)

  Abstract

 Background and Objectives

 Beta thalassemia minor is a common form of microcytic anemia. Although it needs no treatment, prenatal screening of beta thalassemia followed by medical counseling for prevention of birth of children with beta thalassemia major is important before marriage. The specific criterion for beta thalassemia minor diagnosis is the elevated level of Hb-A2. Some discrimination indices helpful in detection of beta thalassemia minor were reported. The aim of this study was to define the sensitivity, specificity, and Youden's index for Kerman index I and II in screening of beta thalassemia minor.

 

 Materials and Methods

 A total of 82 patients with microcytic anemia (MCV< 80 fl) including 42 with beta thalassemia minor and 40 with iron deficiency anemia were selected. Differential values of Kerman index I and II were calculated then, the sensitivity, specificity and Youden's index were evaluated.

 

 Results

 In screening of beta thalassemia trait, sensitivity, specificity, and Youden's index were observed to be 93%, 87%, and 80% for Kerman index I respectively for Kerman index II these figures were calculated to be 76%, 90%, and 66% in order.

 

 Conclusions

 Although none of the discrimination indices showed complete sensitivity and specificity, but Kerman index I with higher sensitivity and specificity came out to be more valid in screening of beta thalassemia minor.

 

 Key words : Beta thalassemia, Sensitivity and specificity, Erythrocyte indices.

Keywords: Beta thalassemia, Sensitivity and specificity, Erythrocyte indices.
Full-Text [PDF 167 kb]   (3030 Downloads)    
Type of Study: Research | Subject: Hematology
Published: 2014/08/17
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Cohan N, Ramzi M. Evaluation of sensitivity and specificity of Kerman index I and II in screening beta thalassemia minor. Sci J Iran Blood Transfus Organ 2008; 4 (4) :297-302
URL: http://bloodjournal.ir/article-1-186-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 4, Issue 4 (winter 2008) Back to browse issues page
فصلنامه پژوهشی خون Scientific Journal of Iran Blood Transfus Organ
The Scientific Journal of Iranian Blood Transfusion Organization - Copyright 2006 by IBTO
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