请问一直出现outcome 。。。。。之前都跑出结果来了   今天重新设置对照组就这样

logistic qianyi q101b1 i.agefenzu i.hukou i.educate i.q101g1 i.fanwei i.zaiwaishijian i.chengshigeshu i.jiuyeshenfen i.zhiye
outcome does not vary; remember:
                                  0 = negative outcome,
        all other nonmissing values = positive outcome
r(2000);