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st: methodological question


From   "Joao Pedro W. de Azevedo" <jazevedo@provide.com.br>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: methodological question
Date   Tue, 29 Jun 2004 12:47:39 +0100

Dear Statusers,

I have a methodological question.

I have a county level data on the survival rate of firms after 6, 12, 18,
...,  48 months (see example of the dependent variable below), for a period
of 9 years.

I would like to analyze the effect of regional factors (deprivation, real
wages, average schooling, population density, etc) on the variation of these
aggregated survival rates over time.

My problem is that, as it stands, my dependent variable is tri-dimensional
(region, year, and time of operation).

I've done a search in the economic literature on firm survival and regional
economics, but I could not find any reference that would resemble the type
of data or the problem that I would like to explore. I would like to know if
anyone in the list has any suggestion of references that I might have missed
in economics, or if people on any other fields know of any references of
people looking at any data that might resemble this one (I don't know, but
maybe epidemiology might have regional level that might look at similar
issues).

Any suggestions will be much appreciated.

All the very best,

JP




County	Region	time	1993	1994	1995	1996	1997	1998	1999
2000	2001

a	South  	6 months	95.0	95.1	95.5	95.7	96.8	96.8
96.9	95.9	98.0
a	South  	12 months	87.1	87.1	89.7	89.6	92.4	91.7
92.6	90.2	93.9
a	South  	18 months	79.5	79.8	83.3	83.0	86.4	86.7
85.8	84.7	
a	South  	24 months	73.3	73.1	77.8	78.0	80.6	81.0
79.6	79.2	
a	South  	30 months	68.0	67.3	72.8	72.3	75.8	75.1
74.1		
a	South  	36 months	63.7	62.9	69.0	67.1	70.8	68.7
68.5		
a	South  	42 months	59.3	59.1	65.4	62.6	65.8	64.2

a	South  	48 months	56.1	56.2	61.6	59.1	61.2	59.6


b	South  	6 months	94.2	96.0	96.3	96.7	96.5	97.0
97.0	96.1	97.1
b	South  	12 months	87.2	89.1	90.6	90.5	91.4	91.8
92.1	91.3	92.8
b	South  	18 months	79.9	82.0	84.2	84.5	85.8	85.8
86.3	86.2	
b	South  	24 months	73.9	75.9	78.1	79.0	80.5	79.8
80.8	80.4	
b	South  	30 months	68.2	70.0	73.2	74.2	75.6	74.3
75.8		
b	South  	36 months	64.0	65.4	69.0	70.3	70.4	69.6
71.0		
b	South  	42 months	60.2	60.8	65.4	66.0	66.1	64.9

b	South  	48 months	56.6	57.5	62.0	61.7	61.7	61.1


c	South  	6 months	93.2	94.0	94.6	95.6	95.7	95.8
95.9	96.6	97.2
c	South  	12 months	84.5	85.8	87.8	89.1	89.6	89.8
90.8	91.6	92.7
c	South  	18 months	77.2	78.9	80.7	83.3	84.1	83.8
84.1	86.7	
c	South  	24 months	69.8	72.8	75.1	77.2	78.1	78.0
78.7	80.7	
c	South  	30 months	63.8	66.3	69.3	71.9	72.9	73.0
73.3		
c	South  	36 months	59.4	61.7	65.3	67.8	68.5	68.2
68.3		
c	South  	42 months	55.8	57.3	60.9	63.7	64.0	63.6

c	South  	48 months	52.4	53.7	57.6	60.3	59.9	59.0




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