clogit choice subsidy V8 V10 V23 V24 V18 V19 含0 含6 含12 V11 V21 const, group(obsid)
note: multiple positive outcomes within groups encountered.
note: 21,795 groups (43,590 obs) omitted because of all positive or
      all negative outcomes.
为什么跑条件logit会出现大部分结果omitt了呢，想请教一下问题出在哪了和解决之法，⚽️⚽️