Validation of the WHO Hemoglobin Color Scale Method
This study was carried out to evaluate the diagnostic accuracy of WHO color scale in screening anemia during blood donor selection in Sri Lanka. A comparative cross-sectional study was conducted by the Medical Laboratory Sciences Unit of University of Sri Jayewardenepura in collaboration with Nation...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Anemia |
| Online Access: | http://dx.doi.org/10.1155/2014/531670 |
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| author | Leeniyagala Gamaralalage Thamal Darshana Deepthi Inoka Uluwaduge |
| author_facet | Leeniyagala Gamaralalage Thamal Darshana Deepthi Inoka Uluwaduge |
| author_sort | Leeniyagala Gamaralalage Thamal Darshana |
| collection | DOAJ |
| description | This study was carried out to evaluate the diagnostic accuracy of WHO color scale in screening anemia during blood donor selection in Sri Lanka. A comparative cross-sectional study was conducted by the Medical Laboratory Sciences Unit of University of Sri Jayewardenepura in collaboration with National Blood Transfusion Centre, Sri Lanka. A total of 100 subjects participated in this study. Hemoglobin value of each participant was analyzed by both WHO color scale method and cyanmethemoglobin method. Bland-Altman plot was used to determine the agreement between the two methods. Sensitivity, specificity, predictive values, false positive, and negative rates were calculated. The sensitivity of the WHO color scale was very low. The highest sensitivity observed was 55.55% in hemoglobin concentrations >13.1 g/dL and the lowest was 28.57% in hemoglobin concentrations between 7.1 and 9.0 g/dL. The mean difference between the WHO color scale and the cyanmethemoglobin method was 0.2 g/dL (95% confidence interval; 3.2 g/dL above and 2.8 g/dL below). Even though the WHO color scale is an inexpensive and portable method for field studies, from the overall results in this study it is concluded that WHO color scale is an inaccurate method to screen anemia during blood donations. |
| format | Article |
| id | doaj-art-46058e6c354f40a580a53782ad385ea0 |
| institution | Kabale University |
| issn | 2090-1267 2090-1275 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Anemia |
| spelling | doaj-art-46058e6c354f40a580a53782ad385ea02025-02-03T06:12:32ZengWileyAnemia2090-12672090-12752014-01-01201410.1155/2014/531670531670Validation of the WHO Hemoglobin Color Scale MethodLeeniyagala Gamaralalage Thamal Darshana0Deepthi Inoka Uluwaduge1Medical Laboratory Sciences Unit, Department of Allied Health Sciences, Faculty of Medical Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda 10250, Sri LankaMedical Laboratory Sciences Unit, Department of Allied Health Sciences, Faculty of Medical Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda 10250, Sri LankaThis study was carried out to evaluate the diagnostic accuracy of WHO color scale in screening anemia during blood donor selection in Sri Lanka. A comparative cross-sectional study was conducted by the Medical Laboratory Sciences Unit of University of Sri Jayewardenepura in collaboration with National Blood Transfusion Centre, Sri Lanka. A total of 100 subjects participated in this study. Hemoglobin value of each participant was analyzed by both WHO color scale method and cyanmethemoglobin method. Bland-Altman plot was used to determine the agreement between the two methods. Sensitivity, specificity, predictive values, false positive, and negative rates were calculated. The sensitivity of the WHO color scale was very low. The highest sensitivity observed was 55.55% in hemoglobin concentrations >13.1 g/dL and the lowest was 28.57% in hemoglobin concentrations between 7.1 and 9.0 g/dL. The mean difference between the WHO color scale and the cyanmethemoglobin method was 0.2 g/dL (95% confidence interval; 3.2 g/dL above and 2.8 g/dL below). Even though the WHO color scale is an inexpensive and portable method for field studies, from the overall results in this study it is concluded that WHO color scale is an inaccurate method to screen anemia during blood donations.http://dx.doi.org/10.1155/2014/531670 |
| spellingShingle | Leeniyagala Gamaralalage Thamal Darshana Deepthi Inoka Uluwaduge Validation of the WHO Hemoglobin Color Scale Method Anemia |
| title | Validation of the WHO Hemoglobin Color Scale Method |
| title_full | Validation of the WHO Hemoglobin Color Scale Method |
| title_fullStr | Validation of the WHO Hemoglobin Color Scale Method |
| title_full_unstemmed | Validation of the WHO Hemoglobin Color Scale Method |
| title_short | Validation of the WHO Hemoglobin Color Scale Method |
| title_sort | validation of the who hemoglobin color scale method |
| url | http://dx.doi.org/10.1155/2014/531670 |
| work_keys_str_mv | AT leeniyagalagamaralalagethamaldarshana validationofthewhohemoglobincolorscalemethod AT deepthiinokauluwaduge validationofthewhohemoglobincolorscalemethod |