{smcl} {* *! version 0.3 29 Oct 2019}{...} {cmd:help malmq2} {hline} {title:Title} {phang} {bf:malmq2} {hline 2} Malmquist Productivity Index in Stata {title:Syntax} {p 8 21 2} {cmd:malmq2} {it:{help varlist:inputvars}} {cmd:=} {it:{help varlist:outputvars}} {ifin} {cmd:,} [{it:options}] {synoptset 28 tabbed}{...} {synopthdr} {synoptline} {syntab:Main} {synopt:{cmdab:dmu(varname)}}specifies names of DMUs. {synopt:{cmdab:seq:uential}}specifies sequential production technology. {p_end} {synopt:{cmdab:win:dow(#)}}specifies window production technology with # periods. {p_end} {synopt:{cmdab:bi:ennial}}specifies biennial production technology. {p_end} {synopt:{opt global}}specifies global production technology. {p_end} {synopt:{opt fgnz}}specifies decomposing TFP change using Färe, Grosskopf, Norris, and Zhang's (1994) method. {p_end} {synopt:{opt rd}}specifies decomposing TFP change using Ray and Desli's (1997) method. {p_end} {synopt:{opt ort(string)}}specifies the oriention. The default is ort(i), meaning the input oriented productivity index. ort(out) means the output oriented productivity index. {p_end} {synopt:{opt sav:ing(filename[,replace])}}specifies that the results be saved in {it:filename}.dta. {p_end} {synopt:{opt maxiter(#)}}specifies the maximum number of iterations, which must be an integer greater than 0. The default value of maxiter is 16000. {p_end} {synopt:{opt tol(real)}}specifies the convergence-criterion tolerance, which must be greater than 0. The default value of tol is 1e-8. {p_end} {synoptline} {p2colreset}{p 4 6 2} A panel variable and a time variable must be specified; use {helpb xtset}. {title:Description} {pstd} {cmd:malmq2} selects the input and output variables in the opened data set and estimate Malmquist Productivity Index using Data Envelopment Analysis(DEA) frontier by options specified. {title:Examples} {phang}{cmd:. use "https://raw.githubusercontent.com/kerrydu/malmq2/master/exdata.dta"} {phang}{cmd:. xtset dmu year} {phang}{cmd:. malmq2 K L= Y, global} {phang}{cmd:. malmq2 K L= Y, seq ort(o) fgnz} {phang}{cmd:. malmq2 K L= Y, ort(o) rd sav(tfp_result,replace)} {title:Saved Results} {psee} Macro: {psee} {cmd: r(file)} the filename stores results of {cmd:malmq2}. {p_end} {marker references}{...} {title:References} {phang} Färe, R., Grosskopf, S., Norris, M., & Zhang, Z. (1994). Productivity Growth, Technical Progress, and Efficiency Change in Industrialized Countries. The American Economic Review, 84(1), 66-83. {phang} Ray, S., & Desli, E. (1997). Productivity Growth, Technical Progress, and Efficiency Change in Industrialized Countries: Comment. The American Economic Review, 87(5), 1033-1039. {phang} Pastor, J., Lovell, C. (2005). A global Malmquist productivity index, Economics Letters, 88(2):266-271. {phang} Ji, Y., Lee, C. (2010). Data Envelopment Analysis. Stata Journal 10: 267-280. {phang} Lee, K., Lee,B., Lee, C., Lee, C. (2011). Malmquist Productivity Index using DEA frontier in Stata. Working paper. {phang} Jesús T. Pastor, Mette Asmild, C.A. Knox Lovell (2011). The biennial Malmquist productivity change index, Socio-Economic Planning, 45(1):10-15. {title:Author} {psee} Kerry Du {psee} Xiamen University {psee} Xiamen, China {psee} E-mail: kerrydu@xmu.edu.cn {p_end}