My apologies for misspeaking earlier. In the proc means step I am calculating the number of widths above a threshold for a given subject in a given session. My proc mixed code for the mixed effects ANOVA works perfectly. All I need is a way to keep anything less than the threshold in the data set and equal to zero. This would be the ideal table: Condition, Session, ID, Count 1 1 a 0 1 2 a 0 1 3 a 0 1 4 a 5 So the 4th session is where the subject had a width greater than or equal to 5.
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