I have no clue which SPSS tools that I need to use to figure out which specific pelvic fracture are associated with 867 and 867.1 bladder injuries.

Thank You,

Link to simplified data set:

- Thread starter kylemcat
- Start date

I have no clue which SPSS tools that I need to use to figure out which specific pelvic fracture are associated with 867 and 867.1 bladder injuries.

Thank You,

Link to simplified data set:

Hi Kylemcat,

So patient #1 has 2 pelvic fractures #1 and #2 and suffers from less severe bladder injury?

I assume the dependent variable is the bladder injury?

I assume you have more than 2 patients?

So patient #1 has 2 pelvic fractures #1 and #2 and suffers from less severe bladder injury?

I assume the dependent variable is the bladder injury?

I assume you have more than 2 patients?

I assume you want to be able to predict what bladder injury base on the fractures?

Or more accurately to determine the probability for

Bladder 1 or bladder 2 based on the fractures?

Otherwise it is only analysing the data. (example for bladder 1. 20% fracture 1 30% fracture 2 and 50% fracture 3

Or more accurately to determine the probability for

Bladder 1 or bladder 2 based on the fractures?

Otherwise it is only analysing the data. (example for bladder 1. 20% fracture 1 30% fracture 2 and 50% fracture 3

Last edited:

A confusing thing is that, from the example, it seems to be possible to have both pelvic fracture 1 and pelvic fracture 2.

Maybe do a logistic regression (which is close to the chi-squarred test) or maybe a classification, like Fisher’s linear discrimination analysis.

I'm not sure why do you want to do the chi-square test in this case? just comparing between Bladder 1 and bladder 2 may not give too much?

I was leading to Logistic Regression if Kylemcat wants to predict the probabilities of Bladder 1 and bladder 2 based on the fractures.

Also, In this case, having more than one Fracture is not a problem.

But since the OP has 20k observations I guess that estimation (simply doing the table or parameter estimates in logit) is more important than testing.

But maybe I have misunderstood what it is about.