Table 1.

Characteristics of the Study Population (n = 137 854)

	LWH
	No (n = 107 604)	Yes (<10 y) (n = 15 777)	Yes (≥10 y) (n = 14 473)
Continuous variables, mean (SD)
Age, y	48.1 (13.3)	42.4 (12.6)	54.8 (10.2)
Body mass index, kg/m²	25.0 (4.4)	24.8 (4.4)	26.1 (4.3)
Categorical variables, n (%)
Sex
Men	50 887 (47.3)	8793 (55.7)	10 094 (69.7)
Women	56 717 (52.7)	6984 (44.3)	4379 (30.3)
Occupation/social position
Manager, CEO, skilled jobs	31 810 (29.6)	6489 (41.1)	7134 (49.3)
High‐skilled white collar workers	31 095 (28.9)	3749 (23.8)	3316 (22.9)
Low‐skilled white collar workers	25 725 (23.9)	2907 (18.4)	1540 (10.6)
Blue collar workers	11 064 (10.3)	1418 (9.0)	1237 (8.6)
Smoking habits
No smoker	49 421 (45.9)	6345 (40.2)	5377 (37.2)
Current/former smoker <30 pack‐years	43 109 (40.1)	7510 (47.6)	6529 (45.1)
Current/former smoker ≥30 pack‐years	3917 (3.6)	543 (3.4)	1217 (8.4)
High blood pressure diagnosed
No	94 937 (88.2)	14 500 (91.9)	11 838 (81.8)
Yes	12 667 (11.8)	1277 (8.1)	2635 (18.2)
Diabetes mellitus diagnosed
No	104 893 (97.5)	15 444 (97.9)	13 838 (95.6)
Yes	2711 (2.5)	333 (2.1)	635 (4.4)
Dyslipemia diagnosed
No	98 405 (91.5)	14 824 (94.0)	12 260 (84.7)
Yes	9199 (8.5)	953 (6.0)	2213 (15.3)
Familial history of cardiovascular diseases
No	96 791 (90.0)	14 374 (91.1)	12 730 (88.0)
Yes	10 813 (10.0)	1403 (8.9)	1743 (12.0)
History of IHD (including angina pectoris)
No	106 305 (98.8)	15 630 (99.1)	14 044 (97.0)
Yes	1299 (1.2)	147 (0.9)	429 (3.0)
History of myocardial infarction (excluding angina pectoris)
No	106 819 (99.3)	15 689 (99.4)	14 197 (98.1)
Yes	785 (0.7)	88 (0.6)	276 (1.9)

CEO indicates chief executive officer; IHD, ischemic heart disease; LWH, long working hours.