# Which is the dependent variable in the UCI Liver dataset?

https://archive.ics.uci.edu/ml/datasets/Liver+Disorders lists some papers which have used this dataset. I went to one, Turney, and it says:

The target concept was defined using the sixth column: Class 0 was defined as “drinks < 3” and class 1 was defined as “drinks ≥ 3” Column seven was originally used to split the data into training and testing sets.

In support of this, the file bupa.names says

1. selector field used to split data into two sets.

This doesn't sound like a dependent variable.

But I went to another, Jiang and Zhou and it says there are 6 attributes (hence, presumably, the seventh is the one they use as the dependent variable).

I also found this which claims that the seventh variable is:

a dependent variable with two levels, indicating presence or absence of a liver disorder

Are a lot of people doing classification on a completely random variable?