Table 4 Sample characteristics at baseline and follow-up

Age (years, mean (SD))

43.3 (10.6)

46.0 (10.4)

Male gender (%)

45.5

45.2

High educational level (%)

52.2

59.4

BMI (kg/m², mean (SD))

24.6 (3.5)

24.4 (3.4)

Not having depressive symptoms (%)

79.6

80.0

 Married or living with partner (%)

79.0

80.5

 Widow/widower (%)

1.7

1.6

 Single (%)

12.2

11.4

 Partner, but living apart (%)

7.1

6.5

 Full-time job (%)

71.9

72.4

 Part-time job (%)

17.1

18.9

 Household (%)

5.4

3.2

 Unemployed/job-applicant (%)

2.7

1.1

 Career interruption (%)

1.0

2.7

 Retirement (%)

1.0

1.6

 Student (%)

1.0

0.0

 White collar (%)

71.9

73.0

 Blue collar (%)

23.4

24.6

 Another job (e.g. household) (%)

4.7

2.4

TV viewing time (min/average day, mean (SD))

129.0 (74.6)

122.0 (75.9)

Computer use (min/average day, mean (SD))

58.5 (69.0)

54.6 (61.0)

Motorized transport (min/average day, mean (SD))

75.6 (76.2)

69.5 (60.1)

Occupational sitting time (min/average day, mean (SD))

216.4 (170.2)

222.0 (158.5)