Table 3.

Correlates of Cognitive Impairment Based on MoCA Score <26

Variable	Odds Ratio (95% Confidence Interval) P-Value
	Univariate Analyses	Multivariate Analysis
Age*	1.75 (1.36–2.25) <.001	1.60 (1.24–2.07) <.001†
Sex	4.65 (1.81–11.95) .001	3.77 (1.21–11.73) .02
Education	0.87 (0.77–0.98) .02	0.85 (0.74–0.98) .03
Hoehn and Yahr‡	3.13 (1.46–6.71) .003	2.58 (1.03–6.50) .04
Unified Parkinson’s Disease Rating Scale§	1.07 (1.02–1.11) .006	—
Marital status	1.78 (0.68–4.63) .24	—
Dopamine agonist use	0.52 (0.24–1.16) .11	—
Geriatric Depression Scale score	0.96 (0.86–1.06) .40	—
Levodopa dosage‖	1.06 (0.95–1.17) .31	—
Deep brain stimulation	0.80 (0.29–2.16) .65	—
Duration of Parkinson’s disease	0.99 (0.93–1.05) .76	—

^*Odds ratios for age calculated for 5-year increments.

^†Significant after Bonferroni correction for multiple comparisons.

^‡Hoehn and Yahr stage included as measure of disease severity.

^§N = 98.

^‖Odds ratio for levodopa dosage calculated for 100-mg increments.