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Table 2 Comparison between Schizophrenic patients and control group regarding fractional anisotropy, apparent diffusion coefficient and mean diffusivity values of fornix, corpus callosum, right cingulum and right superior & inferior occipito-frontal fasciculi (n: 50)

From: Structural integrity of grey and white matter in schizophrenic patients by diffusion tensor imaging

 

Groups

Mann–Whitney test

 

Control (n = 25)

Patients (n = 25)

Z

p value

Fornix

Fractional anisotropy

    

 Median [IQR]

0.48 [0.45–0.49]

0.25 [0.24–0.30]

6.085

 < 0.001*

 Min–Max

0.44–0.58

0.20–0.42

  

Apparent diffusion coefficient × 10–3 mm2/s

    

 Median [IQR]

1.90 [1.60–1.98]

1.88 [1.60–1.97]

0.410

0.682

 Min–Max

1.45–2.12

1.33–2.05

  

Mean diffusivity × 10–9 mm2/s

    

 Median [IQR]

4.80 [4.00–5.00]

4.30 [3.80–5.87]

0.253

0.800

 Min–Max

2.00–6.50

2.38–6.74

  

Corpus callosum

Fractional anisotropy

    

 Median [IQR]

0.65 [0.58–0.69]

0.40 [0.38–0.45]

6.072

 < 0.001*

 Min–Max

0.55–0.73

0.20–0.50

  

Apparent diffusion coefficient × 10–3 mm2/s

    

 Median [IQR]

2.00 [1.88–2.01]

1.90 [1.50–2.00]

1.674

0.094

 Min–Max

1.60–2.80

1.30–2.50

  

Mean diffusivity × 10–9 mm2/s

    

 Median [IQR]

4.00 [3.20–4.20]

5.67 [5.40–6.65]

6.069

< 0.001*

 Min–Max

2.80–4.60

4.96–9.80

  

Right cingulum

Fractional anisotropy

    

 Median [IQR]

0.58 [0.55–0.62]

0.34 [0.30–0.38]

6.069

< 0.001*

 Min–Max

0.52–0.68

0.24–0.50

  

Apparent diffusion coefficient × 10–3 mm2/s

    

 Median [IQR]

0.89 [0.85–0.95]

0.86 [0.78–0.92]

1.680

0.093

 Min–Max

0.75–1.05

0.70–1.02

  

Mean diffusivity × 10–9 mm2/s

    

 Median [IQR]

2.50 [2.00–3.00]

2.55 [2.30–3.00]

0.253

0.800

 Min–Max

1.50–3.50

1.88–5.47

  

Right superior occipito-frontal fasciculus

Fractional anisotropy

    

 Median [IQR]

0.55 [0.52–0.58]

0.33 [0.31–0.35]

6.078

< 0.001*

 Min–Max

0.50–0.62

0.25–0.46

  

Apparent diffusion coefficient × 10–3 mm2/s

    

 Median [IQR]

0.84 [0.79–0.89]

0.81 [0.75–0.88]

1.090

0.276

 Min–Max

0.75–1.25

0.70–1.40

  

Mean diffusivity × 10–9 mm2/s

    

 Median [IQR]

2.50 [2.00–2.80]

2.50 [2.10–3.00]

0.759

0.448

 Min–Max

1.6–3.6]

1.9 -3.93

  

Right inferior occipito-frontal fasciculus

Fractional anisotropy

    

 Median [IQR]

0.58 [0.56–0.60]

0.33 [0.30–0.37]

6.079

< 0.001*

 Min–Max

0.55–0.68

0.29–0.51

  

Apparent diffusion coefficient × 10–3 mm2/s

    

 Median [IQR]

0.80 [0.78–0.86]

0.80 [0.78–0.84]

0.409

0.682

 Min–Max

0.76–1.20

0.73–1.09

  

Mean diffusivity × 10–9 mm2/s

    

 Median [IQR]

1.50 [1.33–1.60]

2.70 [2.29–3.20]

5.612

< 0.001*

 Min–Max

1.20–2.90

1.94–4.53

  
  1. IQR interquartile range (25th–75th percentiles), Max maximum, Min minimum, n number
  2. *Significant at p ≤ 0.05