- proc logistic data=cust descend;
- model zd_1=crl yg sc qc jz mth cnt
- /selection=stepwise
- slentry=0.3
- slstay=0.35
- details
- lackfit
- stb;
- output out=pred p=phat lower=lcl upper=ucl;
- run;
SAS日志如下:
NOTE: PROC LOGISTIC is modeling the probability that zd_1=1.
NOTE: Convergence criterion (GCONV=1E-8) satisfied in Step 0.
WARNING: There is a complete separation of data points in Step 1. The maximum likelihood estimate does not exist.
WARNING: The LOGISTIC procedure continues in spite of the above warning. Results shown are based on the last maximum likelihood iteration. Validity of the model fit is questionable.
感觉好像是模型的有效性出了问题。。。能否帮忙解答一下问题到底出在哪里了?



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