Table 2.

The prevalence of individual extrapyramidal signs in each diagnostic group, and odds ratios for a Lewy body diagnosis (DLB+LBV) from univariate models (adjusted for age, education, gender and MMSE).

	Within Group Prevalence (%)*			Unadjusted OR of LB diagnosis* [95% CI]	Adjusted OR of LB diagnosis* [95% CI]
	AD	DLB	LBV
Masked Facies	4.2	48.5	24.8	14.0 [9.9–19.9]	18.6 [12.2–28.3]
Speech/Hypophonia	3.4	30.8	11.4	8.1 [5.4–12.0]	14.1 [8.4–23.4]
Rigidity	9.8	44.6	37.1	6.5 [4.8–8.7]	7.0 [5.1–9.8]
Impaired Posture/Gait	14.2	43.1	31.4	3.7 [2.7–4.9]	6.4 [4.4–9.1]
Bradykinesia	19.3	55.4	46.7	4.4 [3.3–5.8]	5.9 [4.3–8.1]
Impaired Chair Rise	15.4	28.9	28.7	2.2 [1.6–3.0]	4.5 [3.1–6.5]
Resting Tremor	3.2	13.9	7.6	3.7 [2.3–6.0]	3.9 [2.4–6.6]
Postural Instability	12.5	26.2	20.6	2.2 [1.6–3.1]	3.8 [2.6–5.6]
Action/Postural Tremor	6.2	12.3	18.1	2.6 [1.7–3.9]	2.5 [1.6–3.8]

Using a cutoff of ≥1 for Resting Tremor resulted in an adjusted odds ratio of 3.0 [2.1–4.2], with a prevalence of 11.9% in AD subjects, 30.8% in DLB and 23.8% in LBV. Using ≥2 for posture and ≥1 for the gait component in Impaired Posture/Gait, yielded an OR of 7.7 [5.4–11.0] with prevalences of 42.1% in AD, 82.3% in DLB, and 71.4% in LBV

^*All p-values <0.0001