What is your sample size and what are you trying to get out of this? Also, is data prospectively collected? Not sure about SPSS, but I would run logistic regression then calculate odds ratios for 1 v 0, 2 v 0, and 3 v 0, and correct the alpha level used in the confidence intervals associated with the odds ratios to address repeated testing and false discovery risk. Some people will report a trend in the ordinal group by also rerunning the model with 0-3 as a continuous variable.

You can use Poison regression to get the relative risks if you have prospectively collected data.

"mathrules"