Diapositiva 1

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OECD WORKSHOP ON THE MEASUREMENT OF THE
HIGH-GROWTH ENTERPRISES
THE IDENTIFICATION OF HG ENTERPRISES The Italian
case
Paris, November 19, 2007
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Identification of HG
Let Nxx be the active population in year xx,
reference year (xx2005) Step1 a merge by
identification code of the population Nxx and
Nxx-1 to xx-3 ? AAN2002 n N2003 n N2004
n N2005 Step2 we exclude the real births in
xx-3 i.e. Rb(2002) from AA, then
Poten_populationAA-Rb(2002)
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Comparing distributions
Potential population AA versus Active population
N By size class
Dissimilarity index Nxx versus AA
Calculated by nacesize
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Potential population AA
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Size threshold 10 or more employees in the
beginning
Step3 If employees(2002) 10 ?
reference for HG 140,401 for year 2005
Growth threshold 20 per annum
Step4 HG are obtained applying to the population
of reference (step 3) the following rules to
employees and to turnover HG_empl - yes
IF empl(2005)/empl(2002)
1.728 HG_tur - yes IF
turnover(2005)/turnover(2002) 1.728
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Growth measured by employees or turnover
Ratio HG/pop_ref_hg 14033/140401 100 10.0
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HG by type of growth (employees or/and turnover)
by sector of activity ()
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Growth by events
Step5 HG can grow because events of takeover.
Takeover from units that cease Takeover from
units that transfer activity Looking for such
events in the period 2002-2005, we have
identified 979 (7) of HG with events. By
excluding such events we obtain the pure HG,
HG 13054 Ratio HG/pop_ref_hg
13054/140401 100 9.3
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HG with or without events?(1)
HG with events and pure HG, by sector of
activity ()
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HG with or without events?(2)
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HG Turnover and employment Growth rates by size
and sectors
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Gazelle
It is that subset of HG that are real births in
xx-5 and xx-4. For xx2005 gazelles are
obtained by merging the real births 2000 and the
real births 2001 with HG by identification
code Step1 potential gazelle are identified as
the potential population of HG born in 2000 and
2001 (the subset of real births in 2000 and 2001
surviving in 2005, with employees(2002) 10)
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Gazelle
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Working in progress
Changing Growth threshold
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Working in progress
Alternative bases for measurements Varying
threshold of growth BIRCH index
m(xt1-xt0) xt1/xt0 where xt1employees(2005)
xt0employees(2002) HG by Birch are the AA
having mgtm90 OR mgtm95 of the distribution
in the whole economy
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Working in progress
Problem which base to be used as reference
population? AA size 1 ? AA902068
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Working in progress
Comparison between HG and Birch top 10