. Author manuscript; available in PMC: 2020 Oct 14.

Published in final edited form as: J Int Neuropsychol Soc. 2020 May 7;26(9):894–905. doi: 10.1017/S1355617720000430

Table 3.

Group differences on cognitive and functional outcomes

	PD/RBD+ (n = 58) (a)		PD/RBD− (n = 65) (b)		HC (n = 49) (c)
	Range	Mean/% (SD)	Range	Mean/% (SD)	Range	Mean/% (SD)	F	p	Effect Size	Post-hoc Comparisons⁺
*Cognitive Functioning* ^a
*MDRS total score*	124-144	137.93 (4.23)	127-144	138.92 (3.17)	129-144	140.71 (3.00)	4.87	.009	$η_{p}^{2} = .057$	a<c
*Global NP*	25.93-63.29	49.41 (7.05)	34.41-65.48	52.90 (5.50)	43.56-66.41	56.29 (6.13)	10.73	<.001	$η_{p}^{2} = .118$	a<b,c
*Attention/Working memory*	20-57.61	44.23 (8.15)	30-64.20	47.18 (7.54)	34.48-69.94	51.47 (8.38)	7.46	.001	$η_{p}^{2} = .085$	a<c
*Executive Functioning*	23.33-65.75	50.05 (8.93)	38-70	53.92 (6.61)	35.75-70	56.02 (7.79)	5.19	.007	$η_{p}^{2} = .061$	a<b,c
*Language*	34.40-68.72	50.44 (8.49)	25.85-68.72	52.24 (8.85)	40.17-75.67	56.97 (6.99)	6.67	.002	$η_{p}^{2} = .077$	a,b<c
*Learning*	28.67-65.67	49.82 (9.60)	39.33-72	54.31 (7.71)	40.33-72	57.85 (8.33)	7.82	.001	$η_{p}^{2} = .089$	a<b,c
*Memory*	29.33-67.67	51.30 (8.04)	20-70.67	54.84 (7.83)	41-75.67	58.80 (8.45)	7.28	.001	$η_{p}^{2} = .083$	a<c
*Visuospatial* *functioning*	15.92-66.53	51.43 (9.03)	15.05-69.25	55.60 (9.51)	36.52-69.25	57.28 (8.52)	4.10	.018	$η_{p}^{2} = .049$	a<c
*Functional Capacity*
*MMAA*^b	0-33	28.58 (6.60)	4-33	30.06 (5.03)	27-33	31.57 (1.73)	H = 6.24	.044		a<c
*UPSA (Finance subscale)*^b	1-11	9.79 (1.62)	7-11	10.03 (0.93)	7-11	10.24 (0.72)	H = 2.18	.336		--
*IADL*^a	3-16	13.45 (2.90)	8-16	14.41 (1.99)	12.73-20	--	2.66	.106	$η_{p}^{2} = .026$	--

Bold font denotes p<.05. MDRS=Mattis Dementia Rating Scale; Global NP=global neuropsychological performance (calculated as an average of all individual cognitive measures); MMAA= Medication Management Abilities Assessment; UPSA= UCSD Performance-Based Skills Assessment; IADL=Instrumental Activities of Daily Living Scale. All cognitive domains report results using T-scores (M±SD=50±10, range 20–80), except for MDRS total score, which is expressed as a total raw score (range 0-144).

Statistics reported from models controlling for psychiatric symptom severity (depression, trait anxiety, apathy).

Non-parametric Kruskal-Wallis Test

⁺

Bonferroni adjustment for multiple comparisons