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æINDEPTH Mortality Clustering Supplement Under-five mortality: spatial temporal clusters in Ifakara HDSS in Southeastern

By Angelina M. Lutambi, Mathew Alex, Jensen Charles, Chrisostom Mahutanga and Rose Nathan

Abstract

Background: Childhood mortality remains an important subject, particularly in sub-Saharan Africa where levels are still unacceptably high. To achieve the set Millennium Development Goal 4, calls for comprehensive application of the proven cost-effective interventions. Understanding spatial clustering of childhood mortality can provide a guide in targeting the interventions in a more strategic approach to the population where mortality is highest and the interventions are most likely to make an impact. Methods: Annual child mortality rates were calculated for each village, using person-years observed as the denominator. Kulldorff’s spatial scan statistic was used for the identification and testing of childhood mortality clusters. All under-five deaths that occurred within a 10-year period from 1997 to 2006 were included in the analysis. Villages were used as units of clusters; all 25 health and demographic surveillance sites (HDSS) villages in the Ifakara health and demographic surveillance area were included. Results: Of the 10 years of analysis, statistically significant spatial clustering was identified in only 2 years (1998 and 2001). In 1998, the statistically significant cluster (pB0.01) was composed of nine villages. A total of 106 childhood deaths were observed against an expected 77.3. The other statistically significant cluster (pB0.05) identified in 2001 was composed of only one village. In this cluster, 36 childhood deaths were observed compared to 20.3 expected. Purely temporal analysis indicated that the year 2003 was a significan

Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.352.324
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