I am trying to estimate a pooled random effects proportion. I get an error message I have never encountered before: NOTE: At the starting values the G matrix is the zero matrix. Adaptively determining the number of quadrature points is not meaningful. The QMIN=1 value is chosen. You can provide starting values for the covariance parameters with the PARMS statement. It also says: (which I understand better) NOTE: Convergence criterion (ABSGCONV=0.00001) satisfied. NOTE: Estimated G matrix is not positive definite. The confidence interval obtained is really, really, really wide. The code I used is: PROC GLIMMIX DATA=IPDALL2 METHOD=QUAD; CLASS COUNTRY; MODEL NUM/DENOM= /DIST=BIN SOLUTION CL; RANDOM INT /SUBJECT=COUNTRY; RUN;
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