Glossary of Data Variables for Fatal and accident causation ... - ERSO
Glossary of Data Variables for Fatal and accident causation ... - ERSO
Glossary of Data Variables for Fatal and accident causation ... - ERSO
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<strong>Data</strong>base <strong>Glossary</strong> In<strong>for</strong>mation<br />
2. <strong>Data</strong> Restrictions<br />
For the purposes <strong>of</strong> this section the discussion will be split into two sections:<br />
1) Relates to the level <strong>of</strong> data available <strong>and</strong> recordable across the WP5<br />
partner countries<br />
2) The analysis restrictions caused by creating a combined European<br />
dataset <strong>and</strong> the differences between countries.<br />
1) The level <strong>of</strong> data is, in its simplest <strong>for</strong>m, the number <strong>of</strong> different variables<br />
available <strong>for</strong> reliable collection from across the different partner countries<br />
involved in the two WP5 tasks. When considering the completed variable list<br />
that constitutes the glossary, the recorded level <strong>of</strong> data <strong>for</strong> the whole dataset<br />
can be regarded as the minimum available across the partner countries. This<br />
statement should not be misunderstood, it does not mean that the overall<br />
number <strong>of</strong> variables used was purposely kept low to reduce complexity; it is<br />
simply that the data level is set by the country collecting the minimum ‘level’ <strong>of</strong><br />
data, this can be seen in figure 1.<br />
160<br />
Number <strong>of</strong> data variables available <strong>for</strong> selected coutries<br />
140<br />
Number <strong>of</strong> <strong>Variables</strong><br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
1 2 3 4 5 6 7 8 9<br />
Country number<br />
Figure 1: Theoretical data ‘level’ table<br />
Considering a theoretical example <strong>of</strong> 10 countries involved in collecting <strong>accident</strong><br />
data; it is clear that the level <strong>of</strong> data availability will vary. It can be seen from<br />
figure 1 that the theoretical level <strong>of</strong> data recorded by country 3 is beyond the<br />
scope <strong>of</strong> all the other partners involved <strong>and</strong> will there<strong>for</strong>e yield much less<br />
comparable results. A level <strong>of</strong> data at or around that recorded by country 6 is<br />
achievable by all partners. This example demonstrates that the level <strong>of</strong> data<br />
recorded by all partners involved in WP5 is set around the country recording the<br />
least, in this example country 6.<br />
Differences in the availability <strong>of</strong> data will still occur even when a seemingly<br />
conservative data ‘level’ such is chosen. This can be due to the differing source<br />
materials used, the type <strong>of</strong> <strong>accident</strong> investigation conducted or confidentiality<br />
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