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| From | Humaira Asad <humairaasad@hotmail.com> |
| To | STATA HELP <statalist@hsphsun2.harvard.edu> |
| Subject | RE: st: RE: growth rate in panel data |
| Date | Thu, 10 Feb 2011 14:40:10 +0000 |
Thank you Nick for your reply. The Gini is in percentage and I have taken natural logs of the Gini coefficient. I have used: . bysort country: gen ln_gini_gr=(ln_gini/ln_gini[_n-1]-1)*100 but got very weird answers. Humaira Asad PhD Research Scholar UoE Business School University of Exeter, England ---------------------------------------- > From: n.j.cox@durham.ac.uk > To: statalist@hsphsun2.harvard.edu > Date: Thu, 10 Feb 2011 14:29:27 +0000 > Subject: st: RE: growth rate in panel data > > Learn about subscripting under -by:-. Then translate your favourite formula to subscript language. > > There is a tutorial on -by:- in > > SJ-2-1 pr0004 . . . . . . . . . . Speaking Stata: How to move step by: step > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox > Q1/02 SJ 2(1):86--102 (no commands) > explains the use of the by varlist : construct to tackle > a variety of problems with group structure, ranging from > simple calculations for each of several groups to more > advanced manipulations that use the built-in _n and _N > > If log GINI is 3.68, say, then GINI is perhaps exp(3.68) ~ 40 (are you measuring in percents) or 10^(3.68) ~ 4786 (seems unlikely). There is probably a substantive debate on what metric which is best to compare GINI on, but I'm unequal to the challenge. > > Nick > n.j.cox@durham.ac.uk > > Humaira Asad > > I have a 5 yearly panel data set covering 107 countries. I have to calculate the growth rate of different variables. > I have tried the various formulas given in the archive of STATALIST but could not find the solution. My data looks like: > > > Countries Years log of GINI > A 1965 . > A 1970 3.68 > A 1975 2.34 > A 1980 . > B 1965 . > B 1970 3.24 > ... > > I want to calculate the growth rate of log of GINI for 1965, 1970 etc for each country. The years are 1965, 1970 ..... to 2010. > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/