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Table 2 Sample characteristics

From: Interpretation of response categories in patient-reported rating scales: a controlled study among people with Parkinson's disease

  PD (n = 51) Controls (n = 36) P-value e
Male gender, n (%) 36 (71) 14 (39) 0.008 f
Age, mean (SD) 66 (8.1) 66.2 (9.3) 0.889 g
Academic/professional degree, n (%) 26 (51) 19 (53) 0.889 f
Physical functioning, median (q1-q3) a 75 (50-90) 90 (80-95) 0.008 h
Mental health, median (q1-q3) a 76 (64-88) 84 (76-92) 0.068 h
PD duration (years), mean (SD) 9.8 (5.6) - -
Hoehn & Yahr ("on"), median (q1-q3; min-max) b,c II (II-III; I-V) - -
Hoehn & Yahr ("off"), median (q1-q3; min-max) b,d III (III-IV; I-V) - -
Motor fluctuations, n (%) 36 (71) - -
Dyskiesias, n (%) 25 (49) - -
  1. a According to the Physical Functioning and Mental Health scales of the SF-36. Possible score range, 0-100 (100 = better).
  2. b Range, I-V (I = mild unilateral disease; II = Bilateral disease without postural impairment; III = Bilateral disease with postural impairment, moderate disability; IV = Severe disability, still able to walk and stand unassisted; V = Confined to bed or wheelchair unless aided) [23].
  3. c As determined for the "on" phase, i.e. periods with good anti-parkinsonian drug response.
  4. d As determined for the "off" phase, i.e. periods with poor or no anti-parkinsonian drug response.
  5. e Adjusted for multiple testing using the Benjamini-Hochberg procedure [30].
  6. f Chi-square test.
  7. g Independent samples t-test.
  8. h Mann-Whitney U-test.
  9. PD, Parkinson's disease; SD, standard deviation; q1-q3, 25th and 75th percentiles.