Twenty-seven IPD patients from Hualien Tzu Chi Hospital were enrolled between May, 2008 and July, 2012. All patients completed a Parkinson's disease-specific QoL questionnaire and the Beck Depression Inventory (BDI). A structured questionnaire interview and complete neurological examination, including the motor part of the Unified Parkinson's Disease Rating Scale (UPDRS part III), the Schwab and England Disability Scale (S & E), the Hoehn and Yahr Scale, and the Mini-Mental State Examination (MMSE) were administered by a nurse and a neurologist.
The degree of depression and severity of disease were significantly correlated with the QoL of IPD patients (r?=?0.49, p?=?0.01, and r?=?0.44, p?=?0.02, respectively). The UPDRS part III, S & E, and MMSE scores did not correlate significantly with QoL scores (r?=?0.22, p?=?0.26, r?=??0.36, p?=?0.06, and r?=??0.25, p?=?0.22, respectively). The BDI-¢òdepression score accounted for 31.5 % of the variance of the QoL scores.
Depression and disease severity have significant impacts on the QoL of IPD patients. Treatment profiles should encompass both motor and non-motor domains.