OECD Culture and Local Development.pdf - PACA
OECD Culture and Local Development.pdf - PACA
OECD Culture and Local Development.pdf - PACA
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Annex 2<br />
CHAPTER 3: PROMOTING LOCAL DEVELOPMENT BY CREATING CULTURAL<br />
PRODUCTS<br />
Identification <strong>and</strong> statistical measurement of cultural <strong>and</strong> creative districts<br />
Annex 2.1 Concentration<br />
It is useful to look next at indicators of concentration, taking the ratio of the<br />
percentage of employment in the given sector to the average percentage of this kind<br />
of employment in the economy. If:<br />
• S is the sector of activity,<br />
• Z is the territory of reference,<br />
• N(S,Z) is the number of jobs or establishments in activity S in territory Z, <strong>and</strong><br />
• N(S) is the total number of jobs or establishments in the activity, then an initial<br />
concentration index is given by:<br />
N(S,Z)/N(S)<br />
This index is not very satisfactory because it does not take into account the<br />
unequal distribution of jobs <strong>and</strong> establishments. We must then st<strong>and</strong>ardise this first<br />
index in order to compare territories, <strong>and</strong> for that we need data on a territory’s relative<br />
share in the economy. If:<br />
• T represents the total number of jobs or establishments in the economy,<br />
• T(Z) represents the total number of jobs or establishments in the territory Z,<br />
then the concentration index is:<br />
[N(S,Z)/N(S)] / [T(Z)/T]<br />
There will be concentration when this index is greater than unity. For a given sector<br />
of activity, that means that the importance of this territory is greater than its weight<br />
in the French economy.<br />
CULTURE AND LOCAL DEVELOPMENT - ISBN 92-64-00990-6 - © <strong>OECD</strong> 2005 183