Table 3.

Logistic regression with generalized estimated equations for stepwise‐selected variables associated with psychosis

Independent variable	Univariable		Multivariable
	OR (95% CI), unadjusted	P value	OR (95% CI), adjusted	P value
Dementia	6.84 (3.86–12.11)	<0.001a	3.13 (1.71–5.70)	<0.001a
Mean akinetic‐rigid score	3.15 (2.14–4.64)	<0.001a	2.38 (1.48–3.83)	<0.001a
Immediate‐release l‐dopa‐carbidopa LEDD, mg/d	1.17 (1.10–1.23)	<0.001a	1.16 (1.08–1.26)	<0.001a
Anticholinergic medication usage	2.25 (1.204.24)	0.012c	2.83 (1.43–5.59)	0.003b
Controlled‐release l‐dopa‐carbidopa LEDD, mg/d	1.02 (0.95–1.10)	0.530	1.09 (1.00–1.19)	0.040c
Disease duration, y	1.13 (1.07–1.18)	<0.001a	1.04 (0.99–1.10)	0.140
Dopamine agonist LEDD, mg/d	0.73 (0.60–0.89)	0.002b	0.86 (0.71–1.04)	0.110
Mean tremor score	1.30 (0.86–1.95)	0.210	0.67 (0.40–1.11)	0.121
Depression	1.96 (1.18–3.26)	0.009b	1.50 (0.81–2.78)	0.198

Abbreviations: OR, odds ratio; CI, confidence interval; LEDD, l‐dopa equivalent daily dosage; All LEDD variables were divided by 100 to facilitate OR interpretation.

^a P < 0.001.

^b P < 0.01.

^c P < 0.05.