Nicole M. Fortin, "Heterogeneity Biases, Distributional Effects and
Aggregate Consumption:  An Empirical Analysis using Stratified
Micro-Data", Journal of Applied Econometrics, Vol. 10, No. 3, 1995,
pp. 287-311. 

This paper uses stratified microdata from the Canadian FAMEX (78-86) surveys
to investigate whether observed heterogeneity in marginal propensities
to consume hinders the aggregation process.
The data extracts are contained in the files extrc78.dat,extrc82.dat,
extrc84.dat and extrc86.dat, which are themselves ``zipped'' in the
fortin.zip file (approx. 1.6 Mg).
The FORTRAN program ``exst5.f'' performs subextracts from these files
for a desired family type, as indicated in Table I of the paper.
The format to read the extrc*.dat files is the following

      READ(1,400) YEAR,IDENT,FAMTC,TENUR,C1,C2,C12,C3,C4,
    + C34,C5,C6,C7,C8,C78,C5678,Y,P1,P2,P12,P3,P4,P34,P5,P6,P7,
    + P8,P78,P5678
400   FORMAT(F4.0,F7.0,F4.2,F3.0,25G15.7)

The variable YEAR indicates the year of the survey.
The variable IDENT is the original observation identifier available in
the FAMEX data files.
The variable FAMTC indicates the family type according to the
following codes.

            SINGLE (S)
1.1           Single Male (Adult) (SM)
1.2           Single Female (Adult) (SF)
1.3           Single Retired (SR)

            COUPLE (C)
              Couple Double Income (CDI)
2.11              with mortgage (CDIWM)
2.12              other tenures (CDIOT)
              Couple Single Income (CSI)
2.21              with mortgage (CSIWM)
2.22              other tenures (CSIOT)
2.3           Couple Retired (CR)

            FAMILY OF 3 (F3)
              Family of 3 Double Income (F3DI)
3.11              with mortgage (F3DIWM)
3.12              other tenures (F3DIOT)
              Family of 3 Single Income  (F3SI)
3.21              with mortgage (F3SIWM)
3.22              other tenures (F3SIOT)

            FAMILY OF 4  (F4)
              Family of 4 Double Income (F4DI)
4.11              with mortgage (F4DIWM)
4.12              other tenures (F4DIOT)
              Family of 4 Single Income (F4SI)
4.21              with mortgage (F4DIWM)
4.22              other tenures (F4DIOT)

            FAMILY OF 5+  (F5)
              Family of 5+ Double Income (F5DI)
5.11              with mortgage (F5DIWM)
5.12              other tenures (F5DIOT)
              Family of 5+ Single Income (F5SI)
5.21              with mortgage (F5SIWM)
5.22              other tenures (F5SIOT)

6.0 or 4.0  LONE PARENT FAMILY (LPF)


The variable TENUR indicates the housing tenure of the household,
according to the classification code of the FAMEX surveys, but is
not used directly.

The variables C1,C2,C12,C3,C4,C34,C5,C6,C7,C8,C78,C5678 are the
consumption expenditures for the commodity groups indicated in
Table V, that is C1=Food, C2=Intoxicants, C12=Food \& Intoxicants,
C3=Shelter,C4=Household operations,C34=Shelter \& Household operations,
C5=Transport \& Communications, C6=Clothing, C7=Personal Services,
C8=Other miscellaneous nondurables \& services, C78=Miscellaneous
nondurables \& services,C5678=Miscellaneous

The variable Y is the total consumption expenditures.

The variables P1,P2,P12,P3,P4,P34,P5,P6,P7,P8,P78,P5678 are the
household specific prices corresponding to the above commodity
groups.