. xi:reg risk1_w gjw_sum bsize_w indep_w roa_w first_w size_w gnp_w lev_w year12 year13 year14 year15 year16 indusb in
xtset code year
tab indus year
xi:reg risk1_w gjw_sum bsize_w indep_w roa_w first_w size_w gnp_w lev_w year12 year13 year14 year15 year16 indusb indusc indusd induse indusf indusg indush indusi indusk indusl indusm indusn indusp indusq indusr induss i.indus
xtreg risk1_w gjw_sum bsize_w indep_w roa_w first_w size_w gnp_w lev_w year12 year13 year14 year15 year16 ,fe
outreg2 using  D:\结果1\FESE1.xls,stats(coef tstat) aster(coef) bdec(4) tdec(4)  rdec(4) adec(4) adds(Adj_R2,e(r2_a)) replace
estimates store fe
xtreg risk1_w gjw_sum bsize_w indep_w roa_w first_w size_w gnp_w lev_w year12 year13 year14 year15 year16 ,re
estimates store se
hausman fe se, constant sigmamore




> dusc indusd induse indusf indusg indush indusi indusk indusl indusm indusn indusp indusq indusr induss i.indus
i.indus           _Iindus_1-17        (_Iindus_1 for indus==A omitted)
note: _Iindus_2 omitted because of collinearity
note: _Iindus_3 omitted because of collinearity
note: _Iindus_4 omitted because of collinearity
note: _Iindus_5 omitted because of collinearity
note: _Iindus_6 omitted because of collinearity
note: _Iindus_7 omitted because of collinearity
note: _Iindus_8 omitted because of collinearity
note: _Iindus_9 omitted because of collinearity
note: _Iindus_10 omitted because of collinearity
note: _Iindus_11 omitted because of collinearity
note: _Iindus_12 omitted because of collinearity
note: _Iindus_13 omitted because of collinearity
note: _Iindus_14 omitted because of collinearity
note: _Iindus_15 omitted because of collinearity
note: _Iindus_16 omitted because of collinearity
note: _Iindus_17 omitted because of collinearity

请问我这个行业被omitted了，要怎么办才能不omitted 只能用固定效应模型 我可以不管行业吗 时间效应对公司行业类别不会产生影响，被omitted是不是正常的 我看的参考文献里又标明了行业控制了，求大神解答