I am trying to understand the influence of different types of disability on bus trip frequency. Bus trip frequency is an ordinal scale variable with five categories (Never, 1-3 times/month, More than 3 times/month, ...). I am deriving predicting probabilities for different types of disabilities. For the disability types, reference variable is "communication_only" disability in the model. I could not be sure on how to use the reference disability category in the . Predicted probability shows Mobility_only=0 is 0.10 and Mobility_only=1 is 0.22 for bus_trip_frequency=Never. The difference is +0.12. So, should I interpret people with mobility only disability have 12% higher probability to Never use the bus than people with communication only disability. Please correct if me if I am wrong. Thank you.

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