quantiles msp ,gen(mspd) nq(2)  
command quantiles is unrecognized
r(199);
.   replace mspd =0 if mspd==1   
variable mspd not found
r(111);
.   replace mspd =1 if mspd==2      
variable mspd not found
r(111);
.   
.   *均值差异性检验（结果直接输出星号）
.   logout, save(table1) word replace:ttable3 rd_asset, by(mspd) f(%8.4f)
command ttable3 is unrecognized
r(199);
.   *中位数差异性检验（结果直接输出星号）
.   logout, save(table2) word replace:ttable3 rd_asset, by(mspd) median
command ttable3 is unrecognized
r(199);