I'm conducting a binary logistic regression with SPSS 13.0. When using certain categorical independent variables the Hosmer and Lemeshow GOF test cannot be calculated (p = .). In other instances, the p is equal to 1, which seems a bit odd. Any insight into why the Hosmer and Lemeshow GOF might fail or when (in what circumstances) you would get p = 1?
Thanks in advance.
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