Table 3.

Characteristics of language function in LI-PD, NLI-PD and control groups ^a

Subtests of WAB	LI-PD b	NLI-PD c	Control d	F(df), LI-PD cf. NLI-PD	P, LI-PD cf. NLI-PD	F(df), LI-PD cf. control	P, LI-PD cf. control	F(df), NLI-PD cf. control	P, NLI-PD cf. control
Spontaneous speech	17.06 ± 1.92	19.57 ± 0.51	19.75 ± 0.55	24.343 (1, 28)	0.000e	28.736 (1, 34)	0.000e	0.250 (1, 31)	0.621
Auditory comprehension	189.24 ± 9.26	195.14 ± 5.83	194.50 ± 2.80	2.271 (1, 28)	0.143	0.965 (1, 34)	0.333	0.377 (1, 31)	0.544
Repetition	92.00 ± 4.96	92.79 ± 4.51	97.70 ± 3.37	0.218 (1, 28)	0.644	3.636 (1, 34)	0.065	3.657 (1, 31)	0.065
Naming	94.06 ± 5.06	98.29 ± 2.70	98.3 ± 2.27	4.258 (1, 28)	0.048e	5.238 (1, 34)	0.032e	0.606 (1, 31)	0.442
Reading	89.20 ± 9.25	92.75 ± 9.24	95.8 ± 7.05	0.556 (1, 28)	0.465	1.102 (1, 34)	0.303	0.017 (1, 31)	0.897
Writing	69.75 ± 10.86	78.51 ± 15.33	89.80 ± 5.98	1.877 (1, 28)	0.187	13.410 (1, 34)	0.001e	1.824 (1, 31)	0.187
Praxis and construction	78.44 ± 9.28	82.58 ± 10.13	87.8 ± 7.45	0.506 (1, 28)	0.486	0.392 (1, 34)	0.537	0.013 (1, 31)	0.908
Aphasia quotient	89.97 ± 3.69	96.94 ± 1.47	98.07 ± 1.75	34.835 (1, 28)	0.000e	36.259 (1, 34)	0.000e	0.434 (1, 31)	0.515
Performance quotient	33.83 ± 2.06	35.30 ± 2.94	37.26 ± 1.65	1.142 (1, 28)	0.299	5.294 (1, 34)	0.030e	0.407 (1, 31)	0.528
Cortical quotient	87.88 ± 4.20	93.40 ± 3.57	96.07 ± 2.47	9.945 (1, 28)	0.005e	14.206 (1, 34)	0.001e	0.483 (1, 31)	0.493

^aData are expressed as numbers or mean ± standard deviation; ^bn = 17; ^cn = 14; ^dn = 20; ^e P< 0.05.

LI-PD = langue impairment Parkinson disease; NLI-PD = no language impairment Parkinson’s disease; cf. = confer (compare); df = degree of freedom.