A Comparison of Cluster and Systematic Sampling Methods for Measuring Crude Mortality.
AffiliationEpicentre, Paris, France. firstname.lastname@example.org
MetadataShow full item record
AbstractOBJECTIVE: To compare the results of two different survey sampling techniques (cluster and systematic) used to measure retrospective mortality on the same population at about the same time. METHODS: Immediately following a cluster survey to assess mortality retrospectively in a town in North Darfur, Sudan in 2005, we conducted a systematic survey on the same population and again measured mortality retrospectively. This was only possible because the geographical layout of the town, and the availability of a good previous estimate of the population size and distribution, were conducive to the systematic survey design. RESULTS: Both the cluster and the systematic survey methods gave similar results below the emergency threshold for crude mortality (0.80 versus 0.77 per 10,000/day, respectively). The results for mortality in children under 5 years old (U5MR) were different (1.16 versus 0.71 per 10,000/day), although this difference was not statistically significant. The 95% confidence intervals were wider in each case for the cluster survey, especially for the U5MR (0.15-2.18 for the cluster versus 0.09-1.33 for the systematic survey). CONCLUSION: Both methods gave similar age and sex distributions. The systematic survey, however, allowed for an estimate of the town's population size, and a smaller sample could have been used. This study was conducted in a purely operational, rather than a research context. A research study into alternative methods for measuring retrospective mortality in areas with mortality significantly above the emergency threshold is needed, and is planned for 2006.
PublisherPublished by WHO
- Mortality among displaced former UNITA members and their families in Angola: a retrospective cluster survey.
- Authors: Grein T, Checchi F, Escribà JM, Tamrat A, Karunakara U, Stokes C, Brown V, Legros D
- Issue date: 2003 Sep 20
- Italian cancer figures, report 2012: Cancer in children and adolescents.
- Authors: AIRTUM Working Group., CCM., AIEOP Working Group.
- Issue date: 2013 Jan-Feb
- Child mortality patterns in rural areas of Anhui and Henan provinces in China, 1990.
- Authors: Jin SG, Yang GH, Bos E, Wang J, Luo JH, Yang J, Ma EB, Tong MX, Jamison D
- Issue date: 1998 Sep
- Estimating demographic indicators in a conflict-affected population in eastern Sudan.
- Authors: Doocy S, Burnham G, Robinson C
- Issue date: 2007 Mar-Apr
- Mortality and malnutrition among populations living in South Darfur, Sudan: results of 3 surveys, September 2004.
- Authors: Grandesso F, Sanderson F, Kruijt J, Koene T, Brown V
- Issue date: 2005 Mar 23