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Screening for childhood anaemia using copper sulphate densitometry
Dissertation (MSc (Clinical Epidemiology))--University of Pretoria, 2005.
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University of Pretoria
2013
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| _version_ | 1867613434961461249 |
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| access_status_str | Open Access |
| author2 | Rheeder, Paul |
| author_browse | Rheeder, Paul |
| author_facet | Rheeder, Paul |
| collection | Thesis |
| dc_rights_str_mv | © 2003 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Clinical Epidemiology))--University of Pretoria, 2005. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/28027 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:36:05.775Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/28027 Screening for childhood anaemia using copper sulphate densitometry Rheeder, Paul upetd@up.ac.za Funk, Maryke Blood analysis Anemia in children Iron deficiency anemia in children Blood examination UCTD Dissertation (MSc (Clinical Epidemiology))--University of Pretoria, 2005. The objective of this study was to evaluate copper sulphate densitometry as a screening method for anaemia in children. The accuracy of copper sulphate densitometry was also compared to clinical assessment for the presence of pallor and haemoglobin measurement with a BMS-haemoglobinometer. Different observers performed these three screening tests independently. For the purposes of this study, anaemia was defined as a laboratory haemoglobin (Hb) concentration below 10 g/dl. A cross-sectional screening study was undertaken, where the results of the different screening tests were compared to laboratory haemoglobin determination (gold standard). The study sample consisted of one hundred consecutive children, aged between 6 months and 6 years, whose parents had given informed written consent for participation. The study was conducted in the Paediatric Outpatient Department of Pretoria Academic Hospital (73 children) and a local creche (27 children). In this study sample, the prevalence of anaemia (Hb < 10 g/dl) was 17% (95% Confidence Interval (95%CI) 10.2; 25.8). Clinical assessment by students for the presence of pallor had a sensitivity of 41.2% (95%CI 19.4; 66.5), specificity of 81.9% (95%CI 71.6; 89.2), positive predictive value of 31.8% (95% CI14.7; 54.9) and negative predictive value of 87.2%(95%CI 77.2; 93.3). The likelihood ratio for detection of anaemia by clinical assessment was 2.3. Copper sulphate densitometry had a sensitivity of 88.2% (95%CI 62.3; 97.9), specificity of 89.2% (95%CI 79.9; 94.6), positive predictive value of 62.5% (95% CI 40.8; 80.5) and negative predictive value of 97.4% (95%CI 90.0; 99.5) to screen for anaemia. The Likelihood Ratio of a positive copper sulphate-screening test was 8.17. On average, haemoglobin concentration was underestimated by 0.29 g/dl with the BMS-haemoglobinometer, with the 95% limits of agreement ranging from underestimation by 1.3 g/dl to over-estimation by 1.9 g/dl. Logistic regression analysis revealed that both the copper sulphate test and measurements with the BMS-haemoglobinometer predicted anaemia accurately. The area under the Receiver Operating Characteristic (ROC) curve for the haemoglobinometer was 0.94 (95%CI 0.87; 1), while the area under the curve for copper sulphate densitometry was 0.89 (95% CI 0.73; 1). Used together, the area under the ROC curve was 0.95 (95% CI 0.89; 1). In resource-poor settings, copper sulphate densitometry could be an accurate, inexpensive and simple screening method for anaemia in children. Clinical Epidemiology unrestricted 2013-09-07T12:44:40Z 2005-09-22 2013-09-07T12:44:40Z 2003-09-01 2005-09-22 2005-09-19 Dissertation Funk, M 2003, Screening for childhood anaemia using copper sulphate densitometry, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/28027 > H855/ag http://hdl.handle.net/2263/28027 http://upetd.up.ac.za/thesis/available/etd-09192005-135937/ © 2003 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Blood analysis Anemia in children Iron deficiency anemia in children Blood examination UCTD Screening for childhood anaemia using copper sulphate densitometry |
| title | Screening for childhood anaemia using copper sulphate densitometry |
| title_full | Screening for childhood anaemia using copper sulphate densitometry |
| title_fullStr | Screening for childhood anaemia using copper sulphate densitometry |
| title_full_unstemmed | Screening for childhood anaemia using copper sulphate densitometry |
| title_short | Screening for childhood anaemia using copper sulphate densitometry |
| title_sort | screening for childhood anaemia using copper sulphate densitometry |
| topic | Blood analysis Anemia in children Iron deficiency anemia in children Blood examination UCTD |
| url | http://hdl.handle.net/2263/28027 http://upetd.up.ac.za/thesis/available/etd-09192005-135937/ |