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Table 2 Descriptive Statistics for Age, Educational Level, Gender, Memory Item Score, Digit Span Forward, Digit Span Backward, and the Trail Making Test Parts A and memory item

From: Normative scores for a brief neuropsychological battery for the detection of HIV-associated neurocognitive disorder (HAND) among South Africans

 

Statistics

       

Age Group 18-29 (n = 68)

Mean (S.D)

Median

Minimum - Maximum

Skewness

Kurtosis

1 SD from mean

2 SD from

mean

Female

         

   Age

23.29

(2.88)

23

18 -

29

    

   memory

3.77

0.47

4

2

4

-2.33

8.09

3

3

   DSF

6.50

1.38

6

4

9

0.17

2.30

5

4

   DSB

3.63

0.97

3

2

7

1.01

4.18

3

2

   TMT-A

40.73

17.41

35

17

93

1.36

4.25

58

76

   TMT-B

72.57

25.97

35.5

37

220

3.13

18.29

99

125

Male

         

   Age

22.62

(2.82)

22

19 -

29

    

   memory

3.39

0.55

3.5

2.5

4

-0.16

1.75

3

2

   DSF

6.33

1.12

6

4

8

0.70

3.42

5

4

   DSB

4.56

0.73

5

3

5

-1.24

3.17

4

3

   TMT-A

35.89

8.94

35

21

55

0.67

4.05

45

54

   TMT-B

87.78

26.51

77

61

135

0.69

2.11

115

141

Age Group 30-50 (n = 42)

         

Female

         

   Age

38.39

(5.15)

39

30 -

50

    

   memory

3.66

0.48

4

2

4

-1.46

5.03

3

3

   DSF

6.14

1.40

6

4

9

0.40

2.21

5

3

   DSB

3.29

0.83

3

2

6

1.35

5.32

3

2

   TMT-A

48.54

18.70

50

18

90

0.33

2.38

67

86

   TMT-B

89.26

28.42

85

53

180

1.10

4.23

118

146

Male

         

   Age

36

(5.1)

35

29 -

43

    

   memory

3.19

0.96

3.5

1.5

4

-0.83

2.18

2

1

   DSF

6.00

1.07

6

5

8

0.75

2.50

5

4

   DSB

3.88

0.99

4

3

6

1.19

3.75

3

2

   TMT-A

50.00

13.63

53

28

65

-0.43

1.76

64

77

   TMT-B

114.25

43.10

103

67

185

0.49

1.83

157

201

  1. Memory Item: the number of words correctly recalled out of four words.
  2. DSF and DSB: the number of items repeated in the correct sequence.
  3. TMT Part A and TMT Part B: the number of seconds taken to complete test.