Table 4.

Association between PD and cancer according to smoking status

PD patients (N = 487)Reference subjects (N = 487)Adjusted RR*P value for interaction
All cancers
    Smoking status0.35
    Never smoker (n = 496)28 (50.0)28 (50.0)1.01 (0.60-1.71)
    Ever smoker (n = 478)25 (38.5)40 (61.5)0.72 (0.44-1.20)
Smoking-related cancers
    Smoking status0.02
    Never smoker (n = 496)9 (64.3)5 (35.7)1.80 (0.60-5.39)
    Ever smoker (n = 478)5 (23.8)16 (76.2)0.33 (0.12-0.92)
Non–smoking-related cancers
    Smoking status0.68
    Never smoker (n = 496)19 (45.2)23 (54.8)0.83 (0.45-1.53)
    Ever smoker (n = 478)20 (45.5)24 (54.6)1.00 (0.55-1.82)
  • * Adjusted for alcohol use, BMI category, and exercise category.