Death certificate data and causes of death in patients with parkinsonism

More than half of PD cases died while still ambulatory and independent, after a longer disease course and due to causes commonly seen in that age group. Deaths among advanced PD patients occurred due to causes similar to what we found in non-PD cases. These findings can be useful for clinical, prognostic and counseling purposes. Underlying parkinsonian disorders are poorly documented in DCs, undermining its' use as sources of data collection.