Table 4.

Ordinal Regression Analysis: Interviewer‐rated Adjusted Best‐fit Model

Parameter	Hypothesis Test			OR	95% Wald CI for OR
	Wald ${\mathit{\chi }}^2$	df	P Value		Lower	Upper
Analgesics vs. no analgesics	34.707	1	0.000	3.456	2.288	5.221
Comorbidities vs. no comorbidities	12.548	1	0.000	1.719	1.274	2.319
Age	4.099	1	0.043	1.009	1.000	1.018
Premanifest vs. stage IV or V	9.504	1	0.002	0.340	0.171	0.675
Stage I vs. stage IV or V	8.546	1	0.003	0.438	0.252	0.762
Stage II vs. stage IV or V	5.958	1	0.015	0.552	0.342	0.889
Stage III vs. stage IV or V	7.391	1	0.007	0.568	0.378	0.854
Female vs. male	6.306	1	0.012	1.319	1.063	1.638
Dementia vs. no dementia	3.253	1	0.071	0.750	0.549	1.025
Motor score	1.841	1	0.175	0.994	0.986	1.003
IR anxiety	14.080	1	0.000	1.069	1.032	1.106
IR depression	5.091	1	0.024	1.040	1.005	1.076
IR irritability	9.167	1	0.002	1.053	1.018	1.088

CI, confidence interval, IR, interviewer‐rated; OR, odds ratio; df, degrees of freedom.