[程式] 請問以下SAS WARNING的意思
[軟體程式類別]:SAS
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SAS
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[軟體程式類別]:
SAS
[程式問題]:
不懂WARNING內的意思
[軟體熟悉度]:
低(1~3個月)
[問題敘述]:
以1:4配對，想看感染某菌跟LC疾病之關係
共有35個case，140個control
原始資料為 LC:0(無病) LC:1(有病)
跑完後log出現
ERROR: NRRIDG Optimization cannot be completed.
WARNING: Optimization routine cannot improve the function value. You may want
to change the convergence criteria (ABSFCONV=,
FCONV=, GCONV=, XCONV= options) in the MODEL statement.
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.
請問是什麼意思?
語法該如何修正呢(看不懂以上所說的語法該如何寫)
原來的語法如下
謝謝
[程式範例]:
data ab1;
set ab;
proc logistic data=ab1 descending;
model INF=LC;
STRATA STR;
RUN;
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