Meta-Analysis of the Relationship between Deep Brain Stimulation in Patients with Parkinson’s Disease and Performance in Evaluation Tests for Executive Brain Functions

Table 2

Neuropsychological test			Age	Years PD	DBS	Heterogeneity
						Verbal fluency-semantic	4	141	60,56	12,96	STN
Verbal fluency-Phonetic	7	178	60,21	13,51	STN	19,769	0,032	49,41
WSCT	2	51	60,47	10,97	STN
WSCT-Nelson	5	92	58,72	13,1	STN	34,759	0,021	42,46
Trail Making Test-B	8	161	60,91	12,45	STN	5,26	0,511	0,000
Corsi Span Backward	4	86	59,86	14,56	STN
Digit Span Test	7	246	59,22	13.06	STN-GPi	3,088	0,686	0,000
Trail Making Test-A	3	69	61,6	10,8	STN	0,581	0,748	0,000
Stroop	9	246	65,2	12,18	STN-Cingulate (1)-GPi (1)	102,7	0,001	77,6
Planning	4	98	59,61	13.85	STN

Note: , number of studies; , number of patients, DBS (deep brain stimulation); , heterogeneity intradomain; value of statistic; , percent of heterogeneity from difference.