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Table 2 Descriptive statistics and Mann–Whitney test results

From: Association between microscopic brain damage as indicated by magnetization transfer imaging and anticardiolipin antibodies in neuropsychiatric lupus

Parameter

IgM aCL+

IgM aCL-

P

IgG aCL+

IgG aCL-

P

Lac+

Lac-

P

Number of patients

9

9

-

9

9

-

13

5

-

Age (years)

36.4 ± 13.4

31.6 ± 6.4

0.67

31.3 ± 6.5

36.7 ± 13.2

0.49

34.9 ± 10.9

31.6 ± 10.2

0.50

Duration of SLE (years)

7.4 ± 5.0

10.6 ± 8.8

0.55

8.4 ± 3.6

9.6 ± 9.8

0.67

8.8 ± 7.1

9.6 ± 8.0

0.85

Duration of NPSLE (years)

4.4 ± 4.0

6.2 ± 5.5

0.49

4.9 ± 3.2

5.7 ± 6.1

0.73

5.7 ± 5.2

4.3 ± 3.7

0.57

Grey matter peak location

33.8 ± 0.7

34.7 ± 1.0

0.077

34.1 ± 0.3

34.3 ± 1.3

0.67

34.0 ± 0.1

34.8 ± 1.3

0.34

Grey matter peak height

131 ± 24

138 ± 19

0.67

135 ± 28

133 ± 14

0.93

133 ± 22

138 ± 23

0.63

Grey matter mean MTR

32.6 ± 0.9

33.8 ± 1.0

0.011

33.0 ± 0.8

33.3 ± 1.4

0.49

32.9 ± 1.1

33.8 ± 1.1

0.12

White matter peak location

37.2 ± 1.0

38.4 ± 1.0

0.019

37.8 ± 0.4

37.9 ± 1.6

0.93

37.6 ± 1.0

38.4 ± 1.6

0.50

White matter peak height

184 ± 31

178 ± 20

0.26

185 ± 32

177 ± 18

0.16

180 ± 27

183 ± 24

0.99

White matter mean MTR

37.2 ± 0.9

38.2 ± 1.0

0.014

37.6 ± 0.3

37.8 ± 1.5

0.44

37.4 ± 0.9

38.4 ± 1.3

0.14

  1. Listed are the mean values ± standard deviation for IgM-positive/IgM-negative and IgG-positive/IgG-negative aCLs as well as Lac, and P values of Mann–Whitney tests between the groups. aCL, anticardiolipin antibody; Lac, lupus anticoagulant; MTR, magnetization transfer ratio; NPSLE, neuropsychiatric systemic lupus erythematosus; SLE, systemic lupus erythematosus.