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. 2017 Jan 18;17:91. doi: 10.1186/s12889-017-4014-4

Table 1.

Weighteda characteristics of the study population

Men (n = 2270) Women (n = 2142)
Age, n (%)
 15–24 259 (11.4) 314 (14.7)
 25–44 1100 (48.5) 965 (45.1)
 45–54 623 (27.5) 633 (29.6)
 ≥55 288 (12.7) 230 (10.7)
Education, n (%)
 Less than high school degree 345 (15.3) 205 (9.6)
 High school degree 765 (33.9) 698 (32.8)
 College degree 562 (24.9) 564 (26.5)
 University degree 583 (25.9) 663 (31.1)
Occupation, n (%)
 Unskilled workers and maneuvers 715 (31.5) 527 (24.6)
 Qualified workers 386 (17.0) 162 (7.6)
 Office workers 145 (6.4) 491 (23.0)
 Overseers and first level managers 320 (14.1) 409 (19.1)
 Semi-professionals and technicians 171 (7.6) 88 (4.1)
 Professionals 352 (15.5) 356 (16.7)
 Senior and middle managers 179 (7.9) 105 (4.9)
Household income (quartiles), n (%)b
 0–39 999$ 457 (21.2) 484 (25.0)
 40 000–59 999$ 479 (22.3) 422 (21.7)
 60 000–99 999$ 746 (34.7) 620 (31.9)
 ≥100 000$ 470 (21.9) 414 (21.4)
Psychological distress, mean (SD) 3.41 (3.18) 4.39 (3.54)
Psychological demand (tertiles), n (%)
 0–7.2 761 (33.7) 704 (33.1)
 7.3–10 938 (41.5) 778 (36.5)
 >10 562 (24.8) 649 (30.4)
Job control (tertiles), n (%)
 0–20.9 619 (27.4) 740 (34.7)
 21–24.9 753 (33.2) 662 (31.1)
 ≥25 892 (39.4) 728 (34.2)
Reward at work (tertiles), n (%)
 0–13.9 582 (26.2) 640 (30.6)
 14–15.9 619 (27.8) 523 (25.0)
 ≥16 1025 (46.0) 932 (44.5)
Social support at work (tertiles), n (%)
 0–47 663 (29.5) 543 (25.6)
 48–55 814 (36.2) 710 (33.6)
 ≥56 688 (30.6) 787 (37.2)
 Working alone 85 (3.8) 78 (3.7)

aThe sum of the frequencies can be different from the expected number because weighted data were rounded

bMissing values were ≤ 2% for all variables except for household income (n = 321 (119 men and 202 women) where 7.3% were missing)