I have missing values from a few subjects due to instrumentation not working. My data set is N=283 data points. For some subjects i have 60 data points missing max.
I tried to use Amelia 2 to impute the missing values but i am getting a negative number and i am sure this is wrong because its biologically implausible to have a negative number for what i am measuring.
Does anyone have any suggestions on how to proceed?
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