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*! Version 1.1 24 March 2015
*! Jean-Benoit Hardouin
************************************************************************************************************
* Stata program : gengutt
* Generation of Guttman's error per individuals
* Release 1.1 : March 24, 2015 /*no required -order- option*/
*
*
* Jean-benoit Hardouin, phD, Assistant Professor
* Team of Biostatistics, Pharmacoepidemiology and Subjective Measures in Health Sciences (UPRES EA 4275 SPHERE)
* University of Nantes - Faculty of Pharmaceutical Sciences
* France
* jean-benoit.hardouin@anaqol.org
*
* Release 1 : March 20, 2015 /*initial version with only -order- option*/
*
* News about this program :http://www.anaqol.org
*
* Copyright 2015 Jean-Benoit Hardouin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
***********************************************************************************************************
program define gengutt , rclass
syntax varlist(min=2 numeric) [if] , Gen(string) [ Replace Order(string) PAIRWise] /*[,PAIRWise PAIR ppp pmm noADJust GENERror(string) REPlace GRaph MONOtonicity(string) NIRESTscore(string) NIPmatrix(string) HTML(string)]*/
preserve
tokenize `varlist'
local nbitems : word count `varlist'
local nbs=0
forvalues i=1/`nbitems' {
qui su ``i''
local modamax`i'=r(max)
local nbs=`nbs'+`modamax`i''
local testmodamax`i'=0
local ordermax`i'=0
}
if "`order'"=="" {
tempname mattmp
matrix `mattmp'=J(3,`nbs',0)
local col=1
forvalues i=1/`nbitems' {
forvalues s=1/`modamax`i'' {
qui count if ``i''>=`s'
matrix `mattmp'[3,`col']=r(N)
matrix `mattmp'[1,`col']=`i'
matrix `mattmp'[2,`col']=`s'
local ++col
}
}
local list
forvalues j=1/`nbs' {
local max=0
local col=0
local item=0
forvalues i=1/`nbs' {
if `mattmp'[3,`i']>`max' {
local max=`mattmp'[3,`i']
local col=`i'
local item=`mattmp'[1,`i']
}
}
local list `list' `item'
matrix `mattmp'[3,`col']=0
}
local order `list'
}
local nbsteps: word count `order'
tempname matorder
matrix `matorder'=J(3,`nbsteps',0)
local defordre=1
forvalues i=1/`nbsteps' {
local tmp: word `i' of `order'
local ++testmodamax`tmp'
matrix `matorder'[1,`i']=`tmp'
local ordermax`tmp'=`ordermax`tmp''+1
matrix `matorder'[2,`i']=`ordermax`tmp''
local i`tmp'_m`ordermax`tmp''=`defordre'
local s`defordre' i`tmp'_m`ordermax`tmp''
tempname `s`defordre''
qui gen ``s`defordre'''=``tmp''>=`ordermax`tmp''
local ++defordre
}
local error=0
forvalues i=1/`nbitems' {
if `modamax`i''>`testmodamax`i'' {
di in red "The item `i' presents more answer categories than defined in the -order- option "
local error=1
}
}
if `error'!=0 {
error 198
}
if "`replace'"!="" {
qui capture drop `gen'
}
qui gen `gen'=0
forvalues i=1/`nbitems' {
if "`replace'"!="" {
qui capture drop `gen'_``i''
}
qui gen `gen'_``i''=0
}
forvalues i=1/`nbsteps' {
forvalues j=`=`i'+1'/`nbsteps' {
qui replace `gen'=`gen'+1 if ``s`i'''<``s`j'''&``s`i'''!=.&``s`j'''!=.
local iti=`matorder'[1,`i']
local itj=`matorder'[1,`j']
qui replace `gen'_``iti''=`gen'_``iti''+1 if ``s`i'''<``s`j'''&``s`i'''!=.&``s`j'''!=.
qui replace `gen'_``itj''=`gen'_``itj''+1 if ``s`i'''<``s`j'''&``s`i'''!=.&``s`j'''!=.
}
}
if "`replace'"!="" {
capture drop `gen'_gp
}
egen `gen'_gp=concat(``s1''-``s`nbsteps''')
capture restore, not
end