Those who had CAIDE score and participated in cognition interview (n=2359) | Those who had CAIDE score and did not participate in the cognition interview (n=559) | P value for the difference between groups* | Those who had educational-occupational score and participated in cognition interview (n=3982) | Those who had educational-occupational score and did not participate in the cognition interview (n=1315) | P value for the difference between groups* | |
Age (years, mean, SD) | 49.1 (5.9) | 47.8 (6.1) | <0.0001 | 45.5 (6.5) | 43.8 (6.9) | <0.0001 |
Education (years, mean, SD) | 8.0 (2.9) | 7.4 (2.6) | <0.0001 | 7.9 (2.9) | 7.2 (2.4) | <0.0001 |
Blood pressure | ||||||
Normal (n, %) | 1748 (74.1) | 413 (73.9) | 3006 (76.2) | 1015 (78.6) | ||
Slightly elevated or elevated (n, %) | 611 (25.9) | 146 (26.1) | 0.92 | 937 (23.8) | 276 (21.4) | 0.08 |
BMI (kg/m2, mean, SD) | 24.5 (3.0) | 24.3 (3.1) | 0.21 | 24.5 (3.0) | 24.3 (3.2) | 0.09 |
Cholesterol level | ||||||
Normal (n, %) | 1626 (68.9) | 403 (72.1) | 1655 (68.7) | 409 (72.3) | ||
Elevated (n, %) | 733 (31.1) | 156 (27.9) | 0.14 | 755 (31.3) | 157 (27.7) | 0.10 |
Physical activity | ||||||
Active (n, %) | 604 (25.6) | 147 (26.2) | 977 (24.6) | 290 (22.2) | ||
Inactive (n, %) | 1755 (74.4) | 412 (73.7) | 0.74 | 2988 (75.4) | 1019 (77.8) | 0.07 |
Diabetes | ||||||
No diabetes (n, %) | 2323 (98.6) | 550 (98.4) | 3924 (99.0) | 1285 (98.5) | ||
Diabetes (n, %) | 32 (1.4) | 9 (1.6) | 0.65 | 43 (1.1) | 19 (1.5) | 0.28 |
Smoking status | ||||||
Never smoker (n, %) | 1234 (52.4) | 304 (54.5) | 2103 (52.9) | 666 (50.8) | ||
Occasional smoker (n, %) | 68 (2.9) | 18 (3.2) | 120 (3.0) | 33 (2.5) | ||
Former smoker (n, %) | 604 (25.6) | 120 (21.5) | 954 (24.0) | 264 (20.2) | ||
Current smoker (n, %) | 450 (19.1) | 116 (20.8) | 0.23 | 798 (20.1) | 347 (26.5) | <0.001 |
Work status | ||||||
Working/studying (n, %) | 2106 (89.4) | 474 (85.1) | 3420 (85.9) | 1079 (82.0) | ||
Home maker (n, %) | 160 (6.8) | 50 (9.0) | 358 (9.0) | 150 (11.4) | ||
Not working (n, %) | 91 (3.9) | 33 (5.9) | 0.02 | 204 (5.1) | 86 (6.5) | <0.01 |
Nature of work | ||||||
Very monotonous (n, %) | 44 (1.9) | 14 (2.5) | 80 (2.0) | 41 (10.3) | ||
Somewhat monotonous/somewhat variable (n, %) | 1625 (69.4) | 422 (76.6) | 2800 (70.4) | 974 (24.5) | ||
Very variable (n, %) | 672 (28.7) | 115 (20.9) | <0.01 | 1097 (27.6) | 298 (7.5) | <0.001 |
Work environment | ||||||
Outdoors/outdoors and indoors (n, %) | 741 (31.4) | 167 (29.9) | 1372 (34.5) | 455 (34.6) | ||
Indoors (n, %) | 1616 (68.6) | 391 (70.1) | 0.49 | 2610 (65.5) | 860 (65.4) | 0.92 |
Physicality of work | ||||||
Heavy manual labour (n, %) | 212 (9.0) | 52 (9.4) | 431 (10.8) | 155 (11.8) | ||
Manual labour: standing and walking+lifting and carrying (n, %) | 808 (34.3) | 246 (44.2) | 1475 (37.0) | 599 (45.6) | ||
Manual labour: standing and walking (n, %) | 427 (18.1) | 99 (17.8) | 695 (17.5) | 227 (17.3) | ||
Mainly sitting, very little physical activity required (n, %) | 909 (38.6) | 159 (28.6) | <0.001 | 1381 (34.7) | 334 (25.4) | <0.001 |
CAIDE score | 6.7 (2.8) | 6.5 (2.7) | 0.09 | 6.7 (2.8) | 6.5 (2.7) | 0.10 |
Educational-occupational score | 17.8 (3.2) | 17.6 (3.0) | 0.10 | 17.5 (3.3) | 17.1 (3.0) | <0.01 |
*Statistical difference tested with t-test for continuous values and with χ2 test for categorical values.
†The percentage of data used from 1981 for CAIDE score (the rest of the data comes from 1990 for cholesterol values and from 1975 for the other values): cholesterol 55.8%, blood pressure 90.0%, body mass index (BMI) 96.6%, physical activity 96.4%, education 96.9% and age 55.8%. The percentage of data used from 1981 for educational-occupational score (the rest of the data comes from 1975): education 96.9%, work status 96.5%, nature of work 96.4%, work environment 96.6%, physicality of work 96.2% and age 97.0%.