Table 2.

Clinical information on PD subgroups according to history of smoking

History of Smoking	Yes	No	P value
Number (F/M)	22 (8/14)	54 (20/34)	1.00
Age (y; mean±SD)	65.8±7.5	61.0±8.5	0.02
Duration of Illness (y; mean±SD)	4.4±5.2	5.2±5.7	0.11
Age at Diagnosis (y; mean±SD)	61.4±7.8	55.9± 7.6	0.02
LEDD (mg; mean±SD)	520±433	559± 435	0.36
UPDRS-III (mean±SD)	24.5±13.8	22.3± 14.8	0.84
MMSE (mean±SD)	29.1±1.1	29.2±1.1	0.74
MAOI (%, rasagiline/selegiline)	31.8% (9:7)	31.5% (17:22)	1.00

Abbreviations: LEDD: Levodopa equivalent daily dose; MAOI: Monoamine oxidase B inhibitors; MMSE: Mini Mental Status Examination; UPDRS-III: Unified Parkinson’s Disease Rating Scale section III motor scores; UPSIT: University of Pennsylvania Smell Identification Test