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Table 4 Distribution of cognitive status and subcategories of CIND and dementia

From: Prevalence and pattern of cognitive impairment in rural and urban populations from Northern Portugal

Cognitive status

N

%

R:U

F:M

Age (years)

Education (years)

MMSE score

NCI

974

 

0.94

0.96

66.2 (5)

4.0 (1)

28.0 (2)

CIND

141

 

1.3

1.5

69.9 (6)

3.0 (2)

22.0 (3)

   General vascular

36

25.5

1.1

1.8

70.1 (7)

3.0 (2)

23.5 (3)

   Depression

26

18.4

1.1

8.1

69.6 (4)

3.0 (2)

23.0 (2)

   Cerebrovascular

20

14.2

1.4

1.3

69.7 (5)

3.0 (2)

22.5 (4)

   Alcohol abuse

13

9.2

3.3

0.1

69.5 (5)

1.0 (2)

19.0 (3)

   Traumatic brain injury

11

7.8

0.7

0.4

68.6 (7)

2.0 (2)

22.0 (3)

   Sociocultural

8

5.7

8|0

8|0

75.2 (5)

0.5 (1)

18.0 (3)

   Other neurological

8

5.7

0.6

1.1

73.4 (3)

4.0 (3)

26.0 (4)

   Mental retardation

7

5.0

1.5

7|0

65.4 (8)

0.0 (0)

14.0 (3)

   Psychiatric

6

4.3

1.2

0.7

67.0 (7)

4.0 (3)

26.0 (3)

   No other condition

6

4.3

1.2

3.4

66.9 (8)

2.5 (2)

23.5 (4)

Dementia

31

 

2.1

0.7

73.9 (4)

2.0 (2)

17.0 (4)

   AD

12

38.7

3.0

2.0

75.0 (7)

2.0 (2)

18.5 (5)

   Vascular

12

38.7

1.8

0.3

70.4 (4)

2.5 (2)

17.0 (4)

   Alcohol

2

6.5

0.6

0|2

75.2 (4)

0.5 (1)

18.0 (3)

   Parkinson

1

3.2

1|0

1|0

74.1

3.0

20.0

   Rapidly progressive

1

3.2

1|0

0|1

71.5

11.0

24.0

   Unclassifiable

3

12.9

3|0

1.4

76.7 (2)

1.0 (2)

12.0 (6)

  1. R:U - rural urban prevalence ratio; F:M - female/male prevalence ratio; median and interquartile deviation for other variables; whenever category is empty the ratio is indicated by a vertical line (|); MMSE: Mini Mental State Examination