Comparison of two sample survey methods for hyperendemic ochoceciasis

Most researehers rely only on large samples fol' the assessment of onchoeerciasis prevalence in eomrnunities where il is endemic . However, beeause of the large population that must be included in the sample and the cost of surveys, severa! alternative methods are being explored. One is Ihe sel...

Descripción completa

Detalles Bibliográficos
Autores principales:	Akogun, O B, Akoh, J I, Okolo, A
Formato:	Online
Idioma:	eng
Publicado:	Universidad de Costa Rica 1997
Acceso en línea:	https://revistas.ucr.ac.cr/index.php/rbt/article/view/20893

id	RBT20893
record_format	ojs
spelling	RBT208932022-05-25T20:44:55Z Comparison of two sample survey methods for hyperendemic ochoceciasis and a new focus in Dakka, Nigeria Comparison of two sample survey methods for hyperendemic ochoceciasis Akogun, O B Akoh, J I Okolo, A oncnocerciasis Nigeria comparison methods survey cost reduction Most researehers rely only on large samples fol' Ihe assessment of onchoeerciasis prevalence in eomrnunities where il is endemic . However, beeause of the large population that must be included in the sample and the cost of surveys, severa! alternative methods are being explored. One is Ihe seleetion of a small "at risk" sample of 30 persons from eaen eomrnunity lo determine the level of onchoeercal endemicity. In this study both the Small Sample Survey (SSS) and Ihe Complete Enumeration Survey (CES) techniques were IIsed lo determine the prevalence and intensity of onchocerciasis infeetíon in sixteen comrnunities in Dakka district, Nigeria, using conventional epidemiological procedures. The SSS showed Iha! 82.3% of 390 at risk persons were microfilarial positive wíth a mean microfilaria density (MFD) oi 90.9 microfilaria per skínsnip (MF/SS) and six comrnunities were classified as hyperendemic (prevalence beyond 59.9%). The CES of 1529 persol1s produced a coun! of 78.2% positivity and a MFD of 88.44 MF/SS. For each of tlle physical symptoms of Ihe disease and the MFD, computed T-Ies! values showed that ¡he SSS gives an estimate Iha! is impressively close lO tlle CES in Ihe estimation of the prevalence of onchocerciasis in a community des pite its low cosí. Most researehers rely only on large samples fol' the assessment of onchoeerciasis prevalence in eomrnunities where il is endemic . However, beeause of the large population that must be included in the sample and the cost of surveys, severa! alternative methods are being explored. One is Ihe seleetion of a small "at risk" sample of 30 persons from eaen eomrnunity lo determine the level of onchoeercal endemicity. In this study both the Small Sample Survey (SSS) and Ihe Complete Enumeration Survey (CES) techniques were IIsed lo determine the prevalence and intensity of onchocerciasis infeetíon in sixteen comrnunities in Dakka district, Nigeria, using conventional epidemiological procedures. The SSS showed Iha! 82.3% of 390 at risk persons were microfilarial positive wíth a mean microfilaria density (MFD) oi 90.9 microfilaria per skínsnip (MF/SS) and six comrnunities were classified as hyperendemic (prevalence beyond 59.9%). The CES of 1529 persol1s produced a coun! of 78.2% positivity and a MFD of 88.44 MF/SS. For each of tlle physical symptoms of Ihe disease and the MFD, computed T-Ies! values showed that ¡he SSS gives an estimate Iha! is impressively close lO tlle CES in Ihe estimation of the prevalence of onchocerciasis in a community des pite its low cosí. Universidad de Costa Rica 1997-06-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/20893 Revista de Biología Tropical; Vol. 45 No. 2 (1997): Volume 45 – Regular number 2 – June 1997; 871–876 Revista de Biología Tropical; Vol. 45 Núm. 2 (1997): Volumen 45 – Volumen regular 2 – Junio 1997; 871–876 Revista Biología Tropical; Vol. 45 N.º 2 (1997): Volume 45 – Regular number 2 – June 1997; 871–876 2215-2075 0034-7744 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/20893/21034 Copyright (c) 1997 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0
institution	Universidad de Costa Rica
collection	Revista de Biología Tropical
language	eng
format	Online
author	Akogun, O B Akoh, J I Okolo, A
spellingShingle	Akogun, O B Akoh, J I Okolo, A Comparison of two sample survey methods for hyperendemic ochoceciasis
author_facet	Akogun, O B Akoh, J I Okolo, A
author_sort	Akogun, O B
description	Most researehers rely only on large samples fol' the assessment of onchoeerciasis prevalence in eomrnunities where il is endemic . However, beeause of the large population that must be included in the sample and the cost of surveys, severa! alternative methods are being explored. One is Ihe seleetion of a small "at risk" sample of 30 persons from eaen eomrnunity lo determine the level of onchoeercal endemicity. In this study both the Small Sample Survey (SSS) and Ihe Complete Enumeration Survey (CES) techniques were IIsed lo determine the prevalence and intensity of onchocerciasis infeetíon in sixteen comrnunities in Dakka district, Nigeria, using conventional epidemiological procedures. The SSS showed Iha! 82.3% of 390 at risk persons were microfilarial positive wíth a mean microfilaria density (MFD) oi 90.9 microfilaria per skínsnip (MF/SS) and six comrnunities were classified as hyperendemic (prevalence beyond 59.9%). The CES of 1529 persol1s produced a coun! of 78.2% positivity and a MFD of 88.44 MF/SS. For each of tlle physical symptoms of Ihe disease and the MFD, computed T-Ies! values showed that ¡he SSS gives an estimate Iha! is impressively close lO tlle CES in Ihe estimation of the prevalence of onchocerciasis in a community des pite its low cosí.
title	Comparison of two sample survey methods for hyperendemic ochoceciasis
title_short	Comparison of two sample survey methods for hyperendemic ochoceciasis
title_full	Comparison of two sample survey methods for hyperendemic ochoceciasis
title_fullStr	Comparison of two sample survey methods for hyperendemic ochoceciasis
title_full_unstemmed	Comparison of two sample survey methods for hyperendemic ochoceciasis
title_sort	comparison of two sample survey methods for hyperendemic ochoceciasis
title_alt	Comparison of two sample survey methods for hyperendemic ochoceciasis and a new focus in Dakka, Nigeria
publisher	Universidad de Costa Rica
publishDate	1997
url	https://revistas.ucr.ac.cr/index.php/rbt/article/view/20893
work_keys_str_mv	AT akogunob comparisonoftwosamplesurveymethodsforhyperendemicochoceciasisandanewfocusindakkanigeria AT akohji comparisonoftwosamplesurveymethodsforhyperendemicochoceciasisandanewfocusindakkanigeria AT okoloa comparisonoftwosamplesurveymethodsforhyperendemicochoceciasisandanewfocusindakkanigeria AT akogunob comparisonoftwosamplesurveymethodsforhyperendemicochoceciasis AT akohji comparisonoftwosamplesurveymethodsforhyperendemicochoceciasis AT okoloa comparisonoftwosamplesurveymethodsforhyperendemicochoceciasis
_version_	1810114824336572416

Comparison of two sample survey methods for hyperendemic ochoceciasis

Ejemplares similares