نتایج جستجو برای: lot quality assurance sampling
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Traditional Lot Quality Assurance Sampling (LQAS) methods require random sampling to guarantee valid results. However, cluster sampling has been proposed to reduce the number of random starting points. This study uses simulations to examine the classification error of two such designs, a 67x3 (67 clusters of 3 observations) and a 33x6 (33 clusters of 6 observations) sampling scheme to assess th...
BACKGROUND Researchers around the world are using Lot Quality Assurance Sampling (LQAS) techniques to assess public health parameters and evaluate program outcomes. In this paper, we report that there are actually two methods being called LQAS in the world today, and that one of them is badly flawed. METHODS This paper reviews fundamental LQAS design principles, and compares and contrasts the...
HIV Prevalence is still high in Nigeria and Mother to Child transmission of HIV is another burden on HIV positive sero concordance or discordance couples. The Couple HIV Counselling and Testing program (CHCT) was designed to assist in the prevention of mother to child transmission of HIV as a way of fighting against the dreaded HIV epidemics. There are no documented evidence on uptake and accep...
1 Mason JB. Lessons on nutrition of displaced people. J Nutr 2002;132:2096S–2103S. 2 World Health Organization (WHO). Management of Nutrition in Major Emergencies. Geneva: World Health Organization, 2000. 3 World Health Organization (WHO). Physical status: the use and interpretation of anthropometry. Report of a WHO expert committee. Geneva: World Health Organization, 1995. 4 University of Nair...
BACKGROUND Originally a binary classifier, Lot Quality Assurance Sampling (LQAS) has proven to be a useful tool for classification of the prevalence of Schistosoma mansoni into multiple categories (≤10%, >10 and <50%, ≥50%), and semi-curtailed sampling has been shown to effectively reduce the number of observations needed to reach a decision. To date the statistical underpinnings for Multiple C...
OBJECTIVES This study reports on the results of a large-scale targeted condom social marketing campaign in and around areas where female sex workers are present. The paper also describes the method that was used for the routine monitoring of condom availability in these sites. METHODS The lot quality assurance sampling (LQAS) method was used for the assessment of the geographical coverage and...
BACKGROUND The Indian state of Andhra Pradesh accounted for 50% diphtheria and 3% tetanus cases reported globally during 2005. During 2003-2006, there was a rising trend of diphtheria in Hyderabad, the state capital, whereas there was no major change in trend of tetanus cases. We estimated coverage of diphtheria and tetanus vaccine among children aged <or= 6 years and immunity against these dis...
background: there is an international emphasis on providing timely and high quality data to monitor progress of countries toward millennium development goals. iran’s multiple indicator demographic and health survey (irmidhs) aimed to provide valid information on population and health outcomes to monitor progress in achieving national priorities and health programs and to assist policy makers to...
BACKGROUND In November 2009, Sierra Leone conducted a preventive yellow fever (YF) vaccination campaign targeting individuals aged nine months and older in six health districts. The campaign was integrated with a measles follow-up campaign throughout the country targeting children aged 9-59 months. For both campaigns, the operational objective was to reach 95% of the target population. During t...
BACKGROUND Transmission of wild poliovirus (WPV) has never been interrupted in Afghanistan, Pakistan, and Nigeria. Since 2003, infections with WPV of Nigerian origin have been detected in 25 polio-free countries. In 2012, the Nigerian government created an emergency operations center and implemented a national emergency action plan to eradicate polio. The 2013 revision of this plan prioritized ...
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