The within-study variance in the prostate cancer study equals 0.022485. However, in Part 2, you have - unintentionally - fixed this value at 0.019584 (which is the within-study variance of the solid tumors study). Hence, the result of part 2 is wrong. The reason is that in the dataset with the variance components, the studies were not ordered alphabetically (Breast Cancer - Multiple Myeloma -Solid Tumors- Prostate Cancer). This conflicts when assigningthe parameter values to the ordered studies (in the PARMS statement). In part 1, you don't have this problem since studies were ordered alphabetically (BC - MM - OST - PC). To avoid this type of problems, I never use study names to identify the studies, but study numbers.
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