version 6
clear
set memory 80m
set more off
capture log close
cd c:\ricerca\ellison
*replace the above directory with 
*the one you are working on
log using nafta.log,replace
use nafta.dta
merge state using states.dta
describe
gen sr= srjr=="SR" if srjr~=""
tab party,gen(p)
sum
*************************************
*Limited-dependent-variable analysis
*of the Nafta vote in the Senate
*************************************
local regA "p1 sr unemp union avpay exemp ser"
local regB "p1 sr unemp union medy exemp ser"
local regC "p1 sr unemp union inc exemp ser"
local regD "p1 unemp union inc exemp pov ser man agr"
reg yes `regA',robust
logit yes `regA'
logit,or
dprobit yes `regA'
probit
reg yes `regB',robust
logit yes `regB'
logit,or
dprobit yes `regB'
probit
reg yes `regC',robust
logit yes `regC'
logit,or
dprobit yes `regC'
probit
reg yes `regD',robust
logit yes `regD'
logit,or
dprobit yes `regD'
probit
clear
log close