Uncovering Indicators of the International Classification of Functioning, Disability, and Health from the 39-Item Parkinson's Disease Questionnaire

Table 1

Sample characteristics (𝑛=202).

Gender (men/women), 𝑛 (%)	108 (53.5)/94 (46.5)
Age (years), Mean (SD; min–max)	69.8 (10.0; 34–90)
Retired, 𝑛 (%)	143 (70.8)
Married or cohabitant, 𝑛 (%)	144 (71.2)
Living in own home, 𝑛 (%)	179 (88.6)
Disease duration (years), Mean (SD; min–max)	8.7 (6.6; 0.5–28)
Hoehn and Yahr stage of PD^a, Median (q1–q3; min–max)	III (II–IV; I–V)
Perceived disease severity^b, Median (q1–q3; min–max)	2 (2-2; 1–3)
Motor fluctuations^c, 𝑛 (%)	137 (67.8)

^aAs assessed for the “off” phase from clinical records. Range, I–V (I = mild unilateral disease; V = Confined to bed or wheelchair unless aided) [13].
^bSelf-rated as mild (=1), moderate (=2), or severe (=3).
^cSelf-reported as present or absent.
PD, Parkinson’s disease; SD, standard deviation.