Table 2 Descriptive statistics of baseline cognitive test scores provided by ELSA respondents included in analyses of cognitive function across England and London, separated by baseline age group

England-wide sample (n = 8,883)

 Composite Memory Score (0 – 20)

  50–59

3,401

0

9

11.0 ± 3.1

11

13

20

  60–69

2,764

0

8

9.8 ± 3.2

10

12

20

  70–79

1,959

0

6

8.3 ± 3.3

8

11

18

  80–89

725

0

4

6.8 ± 3.2

7

9

16

  90 + 

34

0

3

5.2 ± 2.8

5

8

10

 Executive Function Score

  50–59

3,401

0

18

21.6 ± 6.3

21

26

50

  60–69

2,764

0

16

19.8 ± 6.0

20

23

48

  70–79

1,959

0

14

17.7 ± 5.5

17

21

49

  80–89

725

0

12

16.0 ± 5.5

16

19

37

  90 + 

34

5

10

13.8 ± 4.1

14

17

24

London-wide sample (n = 768)

 Composite Memory Score (0 – 20)

  50–59

308

1

9

10.6 ± 3.5

11

13

20

  60–69

232

0

8

9.8 ± 3.1

10

12

16

  70–79

150

0

6

8.6 ± 3.3

9

11

16

  80–89

71

0

5

7.0 ± 3.1

7

9

14

  90 + 

7

4

6

7.1 ± 2.0

8

8

10

 Executive Function Score

  50–59

308

0

17

20.9 ± 7.0

21

25

50

  60–69

232

5

15

19.0 ± 6.4

18

23

40

  70–79

150

1

13

17.5 ± 5.8

17

21

35

  80–89

71

1

11

15.6 ± 6.1

15

20

37

  90 + 

7

9

11

14.4 ± 4.9

14

16

24