Table 1 Differences in demographic and neuropsychological scores between clusters, and correlations with rPC1

From: Susceptibility to multitasking in stroke is associated to multiple-demand system damage and leads to lateralized visuospatial deficits

  

Group differences

Correlation with rPC1

Measure

N(C1,C2)

C1

M ± SD

C2

M ± SD

t(DF)

p value

(pFDR)

r (95% c.i.)

t(DF)

p value

(pFDR)

Age (years)

46(31,15)

57.35 ± 12.63

70.07 ± 7.31

4.32(42.37)

<0.001

0.009

−0.46(−0.67,−0.2)

3.48(44)

0.001

0.003

Lesion Volume (cm3)

40(27,13)

49.47 ± 69.56

79.79 ± 88.38

1.09(19.43)

0.29

0.33

−0.2(−0.48,0.12)

1.26(38)

0.22

0.25

MMSE

41(28,13)

28.21 ± 1.64

27.62 ± 1.94

0.97(20.32)

0.35

0.35

0.14(−0.18,0.43)

0.88(39)

0.38

0.38

BIT

46(31,15)

141.87 ± 2.75

138.13 ± 4.27

3.09(19.82)

0.005

0.0225

0.54(0.3,0.72)

4.28(44)

<0.001

0.003

Atten. matrices

46(31, 15)

44.23 ± 10.09

37.13 ± 9.8

2.28(28.55)

0.03

0.0675

0.26(−0.03,0.51)

1.79(44)

0.08

0.1

KF-NAP

40(27,13)

2.15 ± 2.88

5.54 ± 4.8

2.35(16.28)

0.032

0.06

−0.54(−0.73,-0.27)

3.93(38)

<0.001

0.003

Raven

45(30, 14)

30.81 ± 3.62

27.57 ± 5.37

2.05(18.53)

0.055

0.1

0.37(0.09,0.6)

2.64(43)

0.01

0.0225

MCST

 Category

44(30, 14)

4.77 ± 1.3

3.57 ± 2.17

1.9(17.57)

0.074

0.11

0.34(0.05,0.58)

2.33(42)

0.025

0.045

 Pers. errors

40(27, 13)

5.8 ± 4.16

8.5 ± 5.64

1.6(19.88)

0.126

0.16

0.26(−0.51,0.04)

1.77(42)

0.08

0.1

  1. Significant results (p values < 0.05) are highlighted in bold.
  2. N number of patients included in each test, overall and in the two clusters. M mean and SD standard deviation. r Pearson correlation coefficient (95% confidence interval in parentheses).
  3. MMSE Mini-Mental State Examination, BIT Behavioral Inattention Test, KF-NAP Kessler Foundation Neglect Assessment Process, MCST Modified Card Sorting Test.
  4. Patients were assigned to one of two clusters (C1 vs C2) through an unsupervised algorithm, based on their performance in the multitasking paradigm. Similarly, rPC1 was obtained from rotated principal components analysis and reflected the underlying susceptibility to multitasking. The p values are reported both uncorrected and FDR-corrected for multiple comparisons or multiple correlations.
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