Table 1.

Baseline Characteristics of Study Participants, the English Longitudinal Study of Ageing, 2004–2005 (n = 5,256)

	N (%)
Age
52–54	526 (10 %)
55–59	1,346 (26 %)
60–64	995 (19 %)
65–69	952 (18 %)
70–74	692 (13 %)
75–79	478 (9 %)
≥ 80	267 (5 %)
Health literacy
Limited	1,455 (28 %)
Sex
Female	2,960 (56 %)
Ethnicity
Non-white	85 (2 %)
Occupational class
Managerial	1,797 (34 %)
Intermediate	1,364 (26 %)
Routine	2,040 (39 %)
Other	53 (1 %)
Educational attainment
Degree or equivalent	1,268 (24 %)
Up to degree level	2,349 (45 %)
No qualification	1,635 (31 %)
Memory index (/27)
Mean (SD)	16.57 (3.74)
Median	17
Range	4–27
Executive function index
Mean (SD)	13.66 (3.10)
Median	14
Range	4–23