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Table 1 Sample characteristics

From: Cross-diagnostic validity of the Nottingham health profile index of distress (NHPD)

  PAD (n = 258) PD (n = 215) P-value
Age, mean (SD) 69 (10.2) 65 (9.9) .000a
Sex (% male/female) 57/43 57/43 .980b
Severity of disease, n (%)    
   Intermittent claudicatio 141 (55.0) NA  
   Critical limb ischemia 117 (45.0) NA  
Perceived PD severity, n (%) c    
   Mild NA 37 (20.0)  
   Moderate NA 118 (63.0)  
   Severe NA 33 (17.0)  
NHPD, md (q1–q4) 20.8 (8.3–37.5) 16.7 (4.2–29.2) .002a
  1. a Mann-Whitney U-test.
  2. b Chi-square test.
  3. c As rated by a subset of 188 patients [4, 30].
  4. PAD, peripheral arterial disease; PD, Parkinson's disease; SD, standard deviation; NHPD, Nottingham Health Profile index of Distress; md, median; NA, not applicable.