[Purpose] Maintaining high quality of life is crucial for the rehabilitation of patients
with Parkinson’s disease. The quality of life scales currently in use do not assess all
quality of life domains or their importance for each individual. Therefore, a new quality
of life measure, the Schedule for the Evaluation of Individual Quality of Life-Direct
Weighting, was used to investigate quality of life in people with Parkinson’s disease.
[Subjects and Methods] Fifteen people with idiopathic Parkinson’s disaese (average age =
80.0 years, standard deviation = 10.3 years, Hoehn & Yahr stages 1–4) were interviewed
using the Schedule for the Evaluation of Individual Quality of Life-Direct Weighting. Its
quality of life constructs were tested by comparing them against disease-specific quality
of life (39-items Parkinson’s Disease Questionnaire), motor functioning (Unified
Parkinson’s Disease Rating Scale Part III), and activities of daily living (Barthel
Index). [Results] Social connections such as “family” and “friends” were revealed as
important constructs of life satisfaction. The Schedule for the Evaluation of Individual
Quality of Life-Direct Weighting was not significantly correlated with the 39-items
Parkinson’s Disease Questionnaire, Unified Parkinson’s Disease Rating Scale Part III, or
Barthel Index but was significantly correlated with the “communication” dimension of the
39-items Parkinson’s Disease Questionnaire. [Conclusion] The Schedule for the Evaluation
of Individual Quality of Life-Direct Weighting detected various domains of quality of
life, especially social relationships with family and friends. “Being heard” was also
revealed as an essential component of life satisfaction, as it provides patients with a
feeling of acceptance and assurance, possibly resulting in better quality of life.