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| Content Provider | Springer Nature Link |
|---|---|
| Author | Goovaerts, Pierre Jacquez, Geoffrey M. |
| Copyright Year | 2005 |
| Abstract | This paper presents the first application of spatially correlated neutral models to the detection of changes in mortality rates across space and time using the local Moran’s I statistic. Sequential Gaussian simulation is used to generate realizations of the spatial distribution of mortality rates under increasingly stringent conditions: 1) reproduction of the sample histogram, 2) reproduction of the pattern of spatial autocorrelation modeled from the data, 3) incorporation of regional background obtained by geostatistical smoothing of observed mortality rates, and 4) incorporation of smooth regional background observed at a prior time interval. The simulated neutral models are then processed using two new spatio-temporal variants of the Moran’s I statistic, which allow one to identify significant changes in mortality rates above and beyond past spatial patterns. Last, the results are displayed using an original classification of clusters/outliers tailored to the space-time nature of the data. Using this new methodology the space-time distribution of cervix cancer mortality rates recorded over all US State Economic Areas (SEA) is explored for 9 time periods of 5 years each. Incorporation of spatial autocorrelation leads to fewer significant SEA units than obtained under the traditional assumption of spatial independence, confirming earlier claims that Type I errors may increase when tests using the assumption of independence are applied to spatially correlated data. Integration of regional background into the neutral models yields substantially different spatial clusters and outliers, highlighting local patterns which were blurred when local Moran’s I was applied under the null hypothesis of constant risk. |
| Starting Page | 137 |
| Ending Page | 159 |
| Page Count | 23 |
| File Format | |
| ISSN | 14355930 |
| Journal | Journal of Geographical Systems |
| Volume Number | 7 |
| Issue Number | 1 |
| e-ISSN | 14355949 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2005-01-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Geography (general) Regional Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth-Surface Processes Geography, Planning and Development Economics and Econometrics |
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