Table 1

Characteristics of the entire population as a whole and according to four income categories

Income categoriesAll (n=13 262)<10 000 (n=980, 7.4%)>10 000<25 000 (n=5751, 43.4%)>25 000<40 000 (n=4120, 31.1%)>40 000 (n=2411, 18.2%)p Value*
Age (years)53.3 (10.6)60.1 (12.7)54.0 (11.2)51.4 (9.5)52.3 (8.8)<0.0001
Sex (males, n, %) 6590 (49.7%)348 (35.5%)2834 (49.3%)2117 (51.4%)1291 (53.5%)<0.0001
BMI (kg/m2)27.7 (4.6)28.7 (5.3)28.2 (4.7)27.3 (4.3)27.0 (4.0)<0.0001
WH-ratio0.91 (0.07)0.92 (0.079)0.91 (0.075)0.91 (0.075)0.91 (0.074)0.019
Systolic blood pressure (mm Hg)139.0 (20.1)143.4 (21.0)140.1 (20.4)137.3 (19.6)137.4 (19.2)0.0053
Diastolic blood pressure (mm Hg)82.7 (9.6)81.7 (9.7)82.8 (9.4)82.7 (9.7)82.8 (10.0)0.0038
Total physical activity (MET-h/day)43.4 (8.7)44.8 (10.4)45.0 (9.7)42.5 (7.9)40.4 (5.2)<0.0001
Leisure time PA (MET-h/day)2.18 (1.88)1.81 (1.67)2.10 (1.78)2.22 (1.96)2.28 (1.94)0.20
Working PA (MET-h/day)14.6 (12.2)22.4 (19.1)18.8 (14.3)12.7 (10.4)10.2 (6.4)<0.0001
Smokers n, %
 Never6370 (48.1%)558 (56.9%)2838 (49.4%)1901 (46.2%)1073 (44.5%)<0.0001
 Current3296 (25.0%)222 (22.6%)1418 (24.7%)1060 (25.8%)596 (24.7%)
 Former3585 (27.5%)200 (20.4%)1490 (25.9%)1154 (28.0%)741 (30.7%)
Total cholesterol (mg/dl)212.3 (40.2)214.3 (41.9)212.8 (40.4)211.8 (40.4)211.0 (38.7)0.64
HDL (mg/dl)57.0 (14.5)58.4 (14.4)57.2 (14.4)56.6 (14.5)56.8 (14.6)0.35
LDL (mg/dl)130.3 (33.6)130.8 (35.7)130.3 (33.8)130.2 (33.6)130.1 (32.7)0.65
CRP (mg/dl)2.4 (3.0)3.0 (3.7)2.6 (3.1)2.2 (2.9)2.1 (2.7)<0.0001
Triglycerides (mg/dl)127.0 (83.8)129.1 (87.0)129.1 (84.5)126.1 (85.0)122.6 (78.4)0.0002
Blood glucose (mg/dl)96.8 (17.0)97.7 (20.4)97.2 (16.8)96.4 (16.5)96.4 (16.4)0.17
Obesity (n, %)3563 (26.9%)352 (36.0%)1733 (30.1%)988 (24.0%)490 (20.3%)<0.0001
Hypertension (n, %)4469 (33.7%)452 (46.2%)2006 (34.9%)1259 (30.6%)752 (31.2%)0.79
  • *p Value adjusted for sex, age, energy intake and marital status.

  • BMI, body mass index; CRP, C reactive protein; LDL, low-density lipoprotein.