Table 1 Sociodemographic Characteristics of Participants at Baseline (n = 263)

Gender, female

199

75.7

Age (mean, SD) [range 20.4–65.3 years]

47.73

10.45

Race

Caucasian

235

89.40

South American

10

3.80

Mediterranean

5

1.90

East Asian

4

1.50

Black

3

1.10

Other

3

1.10

West Asian

2

0.80

North African

1

0.40

Marital status

Married/ partnered

196

74.50

Single

47

17.90

Divorced/widowed

19

7.20

Other

1

0.40

Relationship duration (years)

14.33

13.62

Having children, yes (median = 2 children)

202

76.80

Highest educational level

Lower general education / primary education, or a part of it

4

1.50

General education/ high school

80

30.40

Secondary vocational education

111

42.20

Higher professional education

46

17.50

Scientific education (university)

16

6.10

Otherwise, namely

6

2.30

Employment

Employed (full or part time)

208

79.10

Disabled for work

16

6.10

Homework

15

5.70

Voluntary /unpaid work

10

3.80

Searching for work

8

3.00

Retired

3

1.10

Study

3

1.10

Start of obesity

Childhood

85

32.30

Puberty

64

24.30

Adulthood

107

40.70

Missing

7

2.70

Type of surgery

Roux-en-Y Gastric Bypass

235

89.40

Laparoscopic Omega loop Gastric Bypass

22

8.40

Sleeve gastrectomy

6

2.30