Table 1.

Baseline characteristics of PD patients and reference subjects

CharacteristicPD patients (N = 487)Reference subjects (N = 487)
Median age at PHS randomization59.7 (40.1-85.0)59.8 (39.8-84.6)
Median age at PD diagnosis72.2 (45.7-93.9)
History of smokingn (%)
    Never250 (51.3)246 (50.5)
    Past206 (42.3)204 (41.9)
    Current (<20/d)12 (2.5)12 (2.5)
    Current (≥20/d)19 (3.9)25 (5.1)
Alcohol use
    0 to thrice per month115 (23.9)136 (28.3)
    1-6 times per week227 (47.2)226 (47.0)
    ≥Daily139 (28.9)119 (24.7)
Physical activity
    Exercise to sweat333 (69.5)331 (69.0)
    ≥once per week
    Exercise to sweat146 (30.5)149 (31.0)
    ≤once per week
WHO BMI category*
    <25 kg/m2281 (57.7)281 (57.8)
    25 to <30 kg/m2188 (38.6)193 (39.7)
    ≥30 kg/m218 (3.7)12 (2.5)
  • * Effective sample size of groups may vary due to missing variables.