-ineqord- on SSC has been updated (thanks to Kit Baum) to quash a small bug. The return scalar for Cowell-Flachaire index I(0.25) is now correct. (In the previous version, the value for I(0.75) was returned.) Thanks to anonymous correspondent "Sion" for reporting the error to me. The code also accompanied ab SJ article (st0606 Comparing distributions of ordinal data. S.P. Jenkins, Stata Journal 20(3):505--531.) I have asked for a Software Update.
Code:
TITLE
'INEQORD': module to calculate indices of inequality and polarization for ordinal data
DESCRIPTION/AUTHOR(S)
ineqord calculates indices of inequality and polarization for
ordinal data recorded in the response variable: the
Allison-Foster index, the normalized Average Jump index, multiple
Apouey indices (parameters 0.5, 1, and 2), multiple Abul
Naga-Yalcin indices (parameters (a,b) = (1,1), (2,1), (1,2),
(4,1) and (1,4)), multiple Cowell-Flachaire indices (for
peer-inclusive downward and upward-looking status; parameter
alpha = 0, 0.25, 0.5, 0.75 and, optionally, another alpha value
between 0 and 1), the Jenkins index, and also the standard
deviation. Optionally, ineqord also derives estimates of
cumulative distribution functions, survivor functions, and
the ordinates of Generalized Lorenz curves for status, and
H+ and H- curves. These estimates can be used to describe
ordinal data distributions and to undertake dominance
checks of differences between distributions.
KW: inequality
KW: polarization
KW: ordinal data
KW: indices
KW: survivor functions
KW: Generalized Lorenz curves
KW: H+ and H- curves
Requires: Stata version 14
