Research Article

Item Selection for a New Health-Related Quality of Life Measure for Parkinson’s Disease: The Preference-Based Parkinson’s Disease Index (PB-PDI)

Table 1

Characteristics of the sample (n = 53).

CharacteristicMean (SD) or N (%)

Participant characteristics
 Sex
  Male29 (54.7)
  Age (years)60.0 (10.2)
 Language fluency
  English23 (43.4)
  French28 (52.8)
  Other2 (3.8)
 Geographical location
  Quebec53 (100)
 Education level
  Less than high school1 (1.9)
  High school3 (5.7)
  CEGEP or college14 (26.4)
  Bachelor’s degree14 (26.4)
  Graduate degree21 (39.6)
 Household income
  Less than $20,0003 (5.9)
  ≥$20,000 but <$50,0007 (13.7)
  ≥$50,000 but < $100,00019 (37.3)
  ≥$100,000 but < $150,00015 (29.4)
  ≥ $150,0007 (13.7)
 Marital status
  Married/common law38 (71.7)
  Divorced/separated10 (18.9)
  Widowed0
  Never married5 (9.4)
 Living situation
  Your own home47 (90.4)
  Assisted living0
  Nursing home or long-term care0
  Retirement facility1 (1.9)
  Other4 (7.7)
 Employment status
  Full-time7 (13.5)
  Part-time2 (3.9)
  Self-employed1 (1.9)
  Student0
  Short-term disability3 (5.8)
  Long-term disability9 (17.3)
  Retired29 (55.8)
  Unemployed0
  Other1 (1.9)
 Participation in therapeutic trial
  Yes3 (5.8)
  No49 (94.2)

Participant health descriptors
 Presence of chronic disease
  Yes33 (62.3)
  No20 (37.7)
 SPDDS score36.7 (11.8)
 H&Y scorea2.5 (1)
 VAS score for self-perceived health66.6 (21.6)
 Years since PD diagnosis8.3 (6.1)

Survey characteristics
 Language of completion
  English30 (56.6)
  French23 (43.4)
 Format of completion
  On their own49 (92.5)
  Assistance of an informal caregiver4 (7.6)
  Assistance of a formal caregiver0

aMedian score and interquartile ranges (IQR) reported. SD, standard deviation; N, number; SPDDS, self-assessment Parkinson’s disease disability scale; H&Y, Hoehn and Yahr; VAS, visual analogue scale; PD, Parkinson’s disease.