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461 lines
16 KiB
Plaintext
461 lines
16 KiB
Plaintext
9 months ago
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*! version 2.5.0 2009-10-28 jsl
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* - stata 11 update for returns from -mlogit-
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capture program drop prtab
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program define prtab, rclass
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version 6
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tempname tobase tobase2 addbase replval temp
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tempvar added cell
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** #1 classify each valid type of model
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* zt 18Feb2005
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local iszt = 0
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if ("`e(cmd)'"=="ztp" | "`e(cmd)'"=="ztnb") {
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local iszt = 1
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}
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* zt 19Feb2005
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if "`e(cmd)'"=="ztp" { local io = "typical count" }
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if "`e(cmd)'"=="ztnb" { local io = "typical count" }
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if "`e(cmd)'"=="cloglog" { local io = "typical binary" }
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if "`e(cmd)'"=="cnreg" { local io = "typical tobit" }
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if "`e(cmd)'"=="fit" { local io = "typical regress" }
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if "`e(cmd)'"=="gologit" { local io = "typical mlogit" }
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if "`e(cmd)'"=="intreg" { local io = "typical tobit" }
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if "`e(cmd)'"=="logistic" { local io = "typical binary" }
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if "`e(cmd)'"=="logit" { local io = "typical binary" }
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if "`e(cmd)'"=="mlogit" { local io = "typical mlogit" }
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if "`e(cmd)'"=="nbreg" { local io = "typical count" }
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if "`e(cmd)'"=="ologit" { local io = "typical ordered" }
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if "`e(cmd)'"=="oprobit" { local io = "typical ordered" }
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if "`e(cmd)'"=="poisson" { local io = "typical count" }
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if "`e(cmd)'"=="probit" { local io = "typical binary" }
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if "`e(cmd)'"=="regress" { local io = "typical regress" }
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if "`e(cmd)'"=="slogit" { local io = "typical ordered" }
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if "`e(cmd)'"=="tobit" { local io = "typical tobit" }
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if "`e(cmd)'"=="zinb" { local io = "twoeq count" }
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if "`e(cmd)'"=="zip" { local io = "twoeq count" }
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if "`io'"=="" {
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di
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di in r "prtab does not work for the last type of model estimated."
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exit
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}
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local input : word 1 of `io' /* input routine to _pepred */
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local output : word 2 of `io' /* output routine */
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** #2 get info about variables
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_perhs
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local nrhs = `r(nrhs)'
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local rhsnms "`r(rhsnms)'"
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if "`input'"=="twoeq" {
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local nrhs2 = `r(nrhs2)'
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local rhsnms2 "`r(rhsnms2)'"
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}
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if "`output'" != "regress" & "`output'" != "tobit" {
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_pecats
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local ncats = r(numcats)
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local catnms8 `r(catnms8)'
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local catvals `r(catvals)'
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local catnms `r(catnms)'
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}
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** #3 decode specified input
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syntax varlist(min=1 max=3 numeric) [if] [in] /*
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*/ [, x(passthru) Rest(passthru) Outcome(string) /*
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*/ by(varlist numeric max=1) /*
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*/ noBAse Brief NOLabel NOVARlbl all /*
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*/ CONditional ]
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* zt 19Feb2005
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if `iszt'==1 & "`conditional'"=="conditional" ///
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& "`outcome'"=="0" {
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di _n in r "conditional probabilities for outcome 0 are undefined."
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exit
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}
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*convert input into tobase
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_pebase `if' `in', `x' `rest' `choices' `all'
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mat `tobase' = r(pebase)
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if "`input'"=="twoeq" { mat `tobase2' = r(pebase2) }
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*fix if to take e(sample) and if conditions into account
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_peife `if', `all'
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local if "`r(if)'"
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* handle outcome option for ordered mlogit and ordered models
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if "`outcome'"!="" {
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if "`output'"=="ordered" | "`output'"=="mlogit" {
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local found "no"
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local i = 1
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while `i' <= `ncats' {
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local valchk : word `i' of `catvals'
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local nmchk : word `i' of `catnms'
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if ("`outcome'"=="`valchk'") | ("`outcome'"=="`nmchk'") {
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local found "yes"
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local outcmv = "`valchk'"
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if "`valchk'"!="`nmchk'" { local outcmnm "(`nmchk')" }
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local outcome = `i'
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local i = `ncats'
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}
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local i = `i' + 1
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} /* while `i' <= `ncats' */
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if "`found'"=="no" {
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di in r "`outcome' not category of `e(depvar)'"
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exit 198
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}
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} /* "`output'"=="ordered" | "`output'"=="mlogit" { */
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else if "`output'"=="count" {
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confirm integer number `outcome'
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if `outcome' < 0 { exit 198 }
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local outcmv "`outcome'"
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}
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else {
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di in r "outcome() not allowed for prtab after `e(cmd)'"
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exit 198
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}
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} /* if "`outcome'"!="" */
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*if by option has been specified, put this variable into the end
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*of `varlist'
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local varnoby = "`varlist'" /* needed for tabdisp at end */
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if "`by'"!="" { local varlist "`varlist' `by'" }
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** #4 build PE_in matrix
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local nvars : word count `varlist'
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*cycle through varlist (as many as four variables)
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local i = 1
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while `i' <= 4 {
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*if varlist shorter than i, set ncats# to 1 and varnum# to -1
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if `nvars' < `i' {
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local ncats`i' = 1
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local varnum`i' = -1
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if "`input'"=="twoeq" { local varnm2`i' = -1 }
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}
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else {
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local var`i' : word `i' of `varlist'
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_pecats `var`i'' `if'
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local ncats`i' = r(numcats)
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local nms`i' "`r(catnms)'"
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local nms8`i' "`r(catnms8)'"
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local vals`i' "`r(catvals)'"
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* find variable position in base matrix
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* assign varnum and varnm2 accordingly
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* varnum == -1 if not in main equation
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* varnum2 == -1 if zip/zinb but variable not in inflate equation
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local found "no"
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local varnum`i' -1
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local i2 = 1
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local i2_to : word count `rhsnms'
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while `i2' <= `i2_to' {
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local varchk : word `i2' of `rhsnms'
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unab varchk: `varchk', max(1)
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if "`var`i''"=="`varchk'" {
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local found "yes"
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local varnum`i' = `i2'
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local i2 = `i2_to'
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}
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local i2 = `i2' + 1
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}
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*if zip/zinb model
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if "`input'"=="twoeq" {
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local varnm2`i' -1
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local i3 = 1
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local i3_to : word count `rhsnms2'
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while `i3' <= `i3_to' {
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local varchk : word `i3' of `rhsnms2'
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unab varchk: `varchk', max(1)
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if "`var`i''"=="`varchk'" {
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local found "yes"
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local varnm2`i' = `i3'
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local i3 = `i3_to'
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}
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local i3 = `i3' + 1
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}
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}
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if "`found'"=="no" {
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di in r "`var`i'' not rhs variable"
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exit 198
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}
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} /* else */
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local i = `i' + 1
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} /* while `i' <= `nvars' */
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capture matrix drop PE_in
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capture matrix drop PE_in2
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*build PE_in matrix
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local i1 = 1
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while `i1' <= `ncats1' {
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local i2 = 1
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while `i2' <= `ncats2' {
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local i3 = 1
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while `i3' <= `ncats3' {
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local i4 = 1
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while `i4' <= `ncats4' {
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*make new row of x's for main equation
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mat `addbase' = `tobase'
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if `varnum1' ~= -1 {
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local addval : word `i1' of `vals1'
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mat `addbase'[1, `varnum1'] = `addval'
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}
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if `varnum2' ~= -1 {
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local addval : word `i2' of `vals2'
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mat `addbase'[1, `varnum2'] = `addval'
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}
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if `varnum3' ~= -1 {
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local addval : word `i3' of `vals3'
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mat `addbase'[1, `varnum3'] = `addval'
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}
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if `varnum4' ~= -1 {
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local addval : word `i4' of `vals4'
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mat `addbase'[1, `varnum4'] = `addval'
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}
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*add row of x's to PE_in
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mat PE_in = nullmat(PE_in) \ `addbase'
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*second equation (binary eq for count models)
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if "`input'"=="twoeq" {
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mat `addbase' = `tobase2'
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if `varnm21' ~= -1 {
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local addval : word `i1' of `vals1'
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mat `addbase'[1, `varnm21'] = `addval'
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}
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if `varnm22' ~= -1 {
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local addval : word `i2' of `vals2'
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mat `addbase'[1, `varnm22'] = `addval'
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}
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if `varnm23' ~= -1 {
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local addval : word `i3' of `vals3'
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mat `addbase'[1, `varnm23'] = `addval'
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}
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if `varnm24' ~= -1 {
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local addval : word `i4' of `vals4'
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mat `addbase'[1, `varnm24'] = `addval'
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}
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*add row of x's to PE_in
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mat PE_in2 = nullmat(PE_in2) \ `addbase'
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} /* if "`input'"=="twoeq" */
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local i4 = `i4' + 1
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} /* while `i4' <= `ncats4' */
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local i3 = `i3' + 1
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} /* while `i3' <= `ncats3' */
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local i2 = `i2' + 1
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} /* while `i2' <= `ncats2' */
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local i1 = `i1' + 1
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} /* while `i1' <= `ncats1' */
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if "`output'"=="count" {
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if "`outcome'"!="" { local maxcnt "maxcnt(`outcome')" }
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else { local maxcnt "maxcnt(0)" }
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}
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_pepred, `maxcnt'
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*note: the way the command is now: it requires -two- preserves
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*one here and one in _pepred. This could be improved...
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preserve
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qui gen `added' = 0
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local newobs = rowsof(PE_in)
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local oldn = _N
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local newn = `oldn'+`newobs'
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qui set obs `newn'
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qui replace `added' = 1 if `added' == .
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local i = 1
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while `i' <= `nrhs' {
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local varname : word `i' of `rhsnms'
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local i2 = 1
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while `i2' <= `newobs' {
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local to_rep = `oldn' + `i2'
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sca `replval' = PE_in[`i2',`i']
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qui replace `varname' = `replval' in `to_rep'
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local i2 = `i2' + 1
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}
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local i = `i' + 1
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}
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if "`nrhs2'"!="" {
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local i = 1
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while `i' <= `nrhs2' {
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local varname : word `i' of `rhsnms2'
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local i2 = 1
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while `i2' <= `newobs' {
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local to_rep = `oldn' + `i2'
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sca `replval' = PE_in2[`i2',`i']
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qui replace `varname' = `replval' in `to_rep'
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local i2 = `i2' + 1
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}
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local i = `i' + 1
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}
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}
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di _n in y "`e(cmd)'" in g ": Predicted " _c
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if "`output'"=="binary" {
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local r_toget "p1"
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local fmt "%6.4f"
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if "`brief'"=="" { di in g "probabilities of positive outcome" _c }
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}
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if "`output'"=="regress" {
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local r_toget "xb"
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local fmt "%8.0g"
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if "`brief'"=="" { di in g "values" _c }
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}
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if "`output'"=="tobit" {
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local r_toget "xb"
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local fmt "%8.0g"
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if "`brief'"=="" { di in g "values of y*" _c }
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}
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if "`output'"=="count" & (`iszt'!=1) {
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if "`outcome'"=="" {
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local r_toget "mu"
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local fmt "%8.4f"
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if "`brief'"=="" { di in g "rates" _c }
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}
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if "`outcome'"!="" {
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local r_toget "p`outcome'"
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local fmt "%6.4f"
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if "`brief'"=="" {
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di in g "probabilities of count = `outcome'" _c
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}
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}
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}
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* zero truncated models 19Feb2005
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if `iszt'==1 {
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if "`conditional'"=="" {
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local type "unconditional"
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}
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else {
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local type "conditional"
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}
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if "`outcome'"=="" {
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if "`conditional'"=="" {
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local r_toget "mu"
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}
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else {
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local r_toget "Cmu"
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}
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local fmt "%8.4f"
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if "`brief'"=="" { di in g "`type' rates" _c }
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}
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if "`outcome'"!="" {
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local r_toget "p`outcome'"
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if "`conditional'"=="" {
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local r_toget "p`outcome'"
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
local r_toget "Cp`outcome'"
|
||
|
|
}
|
||
|
|
local fmt "%6.4f"
|
||
|
|
if "`brief'"=="" {
|
||
|
|
di in g "`type' probabilities of count = `outcome'" _c
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if "`output'"=="ordered" | "`output'"=="mlogit" {
|
||
|
|
local fmt "%6.4f"
|
||
|
|
if "`outcome'"=="" {
|
||
|
|
local do_all "yes"
|
||
|
|
local do_allc = 1
|
||
|
|
if "`brief'"=="" { di in g "probabilities" _c }
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
if "`brief'"=="" {
|
||
|
|
di in g "probabilities of outcome `outcmv' `outcmnm'" _c
|
||
|
|
}
|
||
|
|
local r_toget "p`outcome'"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
di in g " for " in y "`e(depvar)'"
|
||
|
|
|
||
|
|
** #5 TRANSLATE EVERYTHING INTO TEMPORARY VARIABLES
|
||
|
|
|
||
|
|
tempvar tmpvar1 tmpvar2 tmpvar3 tmpvar4
|
||
|
|
local count = 1
|
||
|
|
while `count' <= `nvars' {
|
||
|
|
qui gen `tmpvar`count'' = `var`count'' if `added' == 1
|
||
|
|
label variable `tmpvar`count'' "`var`count''"
|
||
|
|
if "`nolabel'"!="nolabel" {
|
||
|
|
local lblnam1 : value label `var`count''
|
||
|
|
if "`lblnam1'"!="" { label values `tmpvar`count'' `lblnam1' }
|
||
|
|
}
|
||
|
|
if "`novarlbl'"!="novarlbl" {
|
||
|
|
local lblnam2 : variable label `var`count''
|
||
|
|
if "`lblnam2'"!="" { label variable `tmpvar`count'' "`lblnam2'" }
|
||
|
|
}
|
||
|
|
local count = `count' + 1
|
||
|
|
}
|
||
|
|
|
||
|
|
*make lists of temporary variables for tabdisp
|
||
|
|
local count = 1
|
||
|
|
local countto : word count `varnoby'
|
||
|
|
while `count' <= `countto' {
|
||
|
|
local tmpxxx = "`tmpvar`count''"
|
||
|
|
local tmpnoby = "`tmpnoby'`tmpxxx' "
|
||
|
|
local count = `count' + 1
|
||
|
|
}
|
||
|
|
if "`by'" != "" {
|
||
|
|
local tmpby = "`tmpvar`nvars''"
|
||
|
|
}
|
||
|
|
|
||
|
|
** #6 DISPLAY OUTPUT
|
||
|
|
*doneyet needed if tables needed for multiple categories (e.g. oprobit)
|
||
|
|
local doneyet "no"
|
||
|
|
while "`doneyet'"=="no" {
|
||
|
|
if "`do_all'"=="yes" {
|
||
|
|
local r_toget = "p`do_allc'"
|
||
|
|
local outcmv : word `do_allc' of `catvals'
|
||
|
|
local outcmnm : word `do_allc' of `catnms'
|
||
|
|
if "`outcmnm'"!="`outcmv'" {
|
||
|
|
di _n in gr "Predicted probability of outcome " /*
|
||
|
|
*/ "`outcmv' (`outcmnm')"
|
||
|
|
}
|
||
|
|
else { di _n in gr "Predicted probability of outcome `outcmv'" }
|
||
|
|
}
|
||
|
|
qui gen `cell' = .
|
||
|
|
mat `temp' = r(`r_toget')
|
||
|
|
local i = 1
|
||
|
|
while `i' <= `newobs' {
|
||
|
|
local to_rep = `oldn' + `i'
|
||
|
|
sca `replval' = `temp'[`i', 1]
|
||
|
|
qui replace `cell' = `replval' in `to_rep'
|
||
|
|
local i = `i' + 1
|
||
|
|
}
|
||
|
|
if "`by'" != "" { local by4 "by(`tmpby')" }
|
||
|
|
label variable `cell' "Prediction"
|
||
|
|
tabdisp `tmpnoby' if `added'==1, c(`cell') `by4' f(`fmt')
|
||
|
|
if "`do_all'"=="yes" {
|
||
|
|
local do_allc = `do_allc' + 1
|
||
|
|
if `do_allc' > `ncats' { local doneyet "yes" }
|
||
|
|
else { drop `cell' }
|
||
|
|
}
|
||
|
|
else { local doneyet "yes" }
|
||
|
|
|
||
|
|
} /* while "`doneyet'" = "no" */
|
||
|
|
|
||
|
|
*print base values if desired
|
||
|
|
if "`brief'"=="" & "`base'"!="nobase" {
|
||
|
|
if "`input'"=="twoeq" {
|
||
|
|
di _n in g "base x values for count equation: "
|
||
|
|
}
|
||
|
|
mat rownames `tobase' = "x="
|
||
|
|
mat _PEtemp = `tobase'
|
||
|
|
_peabbv _PEtemp
|
||
|
|
mat list _PEtemp, noheader
|
||
|
|
if "`input'"=="twoeq" {
|
||
|
|
di _n in g "base z values for binary equation: "
|
||
|
|
mat rownames `tobase2' = "z="
|
||
|
|
mat _PEtemp = `tobase2'
|
||
|
|
_peabbv _PEtemp
|
||
|
|
mat list _PEtemp, noheader
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
end
|
||
|
|
exit
|
||
|
|
* version 1.6.0 1/11/01
|
||
|
|
* version 1.6.1 19Feb2005 zt
|
||
|
|
* version 1.6.2 27Mar2005 slogit
|
||
|
|
* version 1.6.3 13Apr2005
|