Hi I'm running Proc Mixed, using a Random statement for repeated measures. Have a bunch of variables, so run each one separately using the same code. Most have run just fine, but 3 variables all from a second database are giving me "non-est" for the means. I've tried a bunch of random changes to no avail. Rather than this hit-or-miss process, can someone tell me what things cause non-estimable means? Thank you!
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