Is it possible to do statewide “Time Series” analysis using the historical 9-1-1 datasets?
A. 19: Not exactly! While its tempting to use the 9-1-1 datasets, especially the ESITES data, as a proxy for certain types of analysis like historic development patterns and updating Land Use/Land Cover data etc. there are a number of issues to consider first. Regardless, it is simply not possible to compare some of the earlier data releases with later ones due to voids in some of the older data, i.e., “grand-fathered” towns. The evolution of the Emergency 9-1-1 program, changes in technology and the nuances of Vermont’s town-based form of government all play a part in explaining why data from one “snapshot” isn’t always identical, in structure or content, to another. The following is a list of the primary evolutionary milestones that would affect any time series analysis. This is not necessarily a complete list and other issues may also be relevant: • Grand-fathered towns; • Procedural issues; • Conflation with the Automatic Location Identification (ALI) database; and • Migration to S
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