The goal of this observational study is to evaluate efficacy and safety of sacral neuromodulation in neurogenic patients compared to non-neurogenic (idiopathic) patients. \[. The main question\[s\] it aims to answer are: * determine efficacy and safety of the therapy in neurogenic patients. * compare outcomes of the therapy to idiopathic patients. If there is a comparison group: Researchers will compare the outcomes of the therapy between the neurogenic and non-neurogenic subset of patients.