N | % | Mean (SD) | |
At phase 1 (1985–8) | |||
Age, years | 4531 | 43.9 (5.9) | |
Sex | |||
Men | 3273 | 72 | |
Women | 1258 | 28 | |
Grade level | |||
Administrative (high) | 1592 | 35 | |
Professional | 2295 | 51 | |
Clerical/support (low) | 644 | 14 | |
Smoking | |||
Never smokers | 2418 | 54 | |
Former smokers | 1517 | 34 | |
Current smokers | 512 | 12 | |
Alcohol consumption (units of alcohol/week) | |||
None | 667 | 16 | |
1–14 Units/week | 2710 | 58 | |
15–22 Units/week | 550 | 12 | |
Over 22 units/week | 574 | 13 | |
BMI (kg/m2) | 4526 | 24.4 (3.3) | |
Depressive symptoms | |||
No | 3728 | 83 | |
Yes | 803 | 17 | |
Hypertension | |||
No | 4207 | 93 | |
Yes | 314 | 7 | |
Job strain | |||
Active work | 1810 | 39 | |
Low strain | 764 | 17 | |
Passive work | 1021 | 23 | |
High strain | 932 | 21 | |
At phase 5 (1997–9) | |||
Memory | 4146 | 6.9 (2.4) | |
Inductive reasoning (AH4-I) | 4146 | 47.4 (10.7) | |
Vocabulary (Mill Hill) | 4146 | 25.2 (4.3) | |
Phonemic fluency | 4146 | 17.0 (4.4) | |
Semantic fluency | 4146 | 15.8 (4.2) | |
At phase 7 (2003–4) | |||
Memory | 4146 | 6.9 (2.4) | |
Inductive reasoning (AH4-I) | 4144 | 44.6 (10.9) | |
Vocabulary (Mill Hill) | 4136 | 25.2 (4.3) | |
Phonemic fluency | 4126 | 16.9 (4.2) | |
Semantic fluency | 4138 | 15.9 (3.9) |
BMI, body mass index.