横截面平行微观数据,数据里变量只有空格(缺漏)和WW标识的数据,做OLS robust回归 8 个回复 - 257 次查看
egen var19=rmiss(interestrate)
drop if miss!=0
set obs 500000
generate str var20 = "WW" in 1
replace var20 = "." in 2
replace var20 = "2" in 500000
drop if upper(trim(oilprice))=="WW"
gener ...2015-10-19 21:13 - uslaolaogood - Stata专版