[問題] WARNING: Iteration limit exceeded
我跑proc genmod的時候一直出現這個warning，
導致最後的Odds ratio沒辦法跑出來，
請問有人知道這個warning是代表什麼意思，又我該怎麼解決？
先謝過了^^
我用的是SAS 9.0版，
1003 proc genmod data=aa1;
1004 class id1 gender;
1005 model group1=gender age ne HGB day/ dist = normal link = log;
1006 repeated subject=id1/type=exch covb corrw;
1007 estimate "HGB" HGB 1 -1/exp;1008 run;
NOTE: Writing HTML Body file: sashtm71.htm
NOTE: Algorithm converged.
NOTE: The scale parameter was estimated by maximum likelihood.
WARNING: The number of response pairs for estimating correlation
is less than or equal to the number of regression parameters.
A simpler correlation model might be more appropriate.
這樣的意思是說就不用link=log 囉??
NOTE: No convergence of GEE parameter estimates after 50 iterations.
WARNING: Iteration limit exceeded.
NOTE: PROCEDURE GENMOD used
(Total process time): real time 0.12 seconds
cpu time 0.06 seconds
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