Table 2 Scores of the SF-36 questionnaire on health-related quality of life by body mass index

18.5–24.9 Normal weight

25.0–29.9 Overweight

≥ 30 Obese

N = 526

N = 546

N = 100

F

mean(± s.d.)

/rank/

mean(± s.d.)

/rank/

mean(± s.d.)

/rank/

Physical functioning

90.2 (17.0)**

1

85.0 (19.2)

3

77.1 (22.3) §§

3

23.329

Role-physical

82.1 (30.2)

4

81.1 (30.6)

4

75.2 (32.8)

4

1.959

Bodily pain

79.7 (23.3)*

5

77.6 (23.9)

5

72.9 (25.4) §

5

3.629

General health

68.4 (17.3)**

7

66.6 (16.8)

7

62.0 (18.4) §§

7

5.660

Vitality

64.7 (18.2)

8

65.6 (17.5)

8

61.5 (19.3)

8

2.120

Social functioning

86.0 (16.5)

2

85.7 (15.8)

2

82.9 (18.3)

1

1.582

Role-emotional

85.0 (30.3)

3

86.5 (28.7)

1

81.6 (34.2)

2

1.144

Mental health

69.7 (17.9)

6

71.0 (15.9)

5

68.6 (17.5)

6

1.181

BMI(kg/m²) women

18.5–24.9 Normal weight

25.0–29.9 Overweight

≥ 30 Obese

N = 1168

N = 365

N = 121

F

mean(± s.d.)

/rank/

mean(± s.d.)

/rank/

mean(± s.d.)

/rank/

Physical functioning

86.6 (20.0)***

1

68.4 (25.6) &&

3

59.4 (28.0) §§

5

130.737

Role-physical

78.3 (32.7)**

4

65.2 (38.5) &&

4

62.4 (36.9) §§

3

25.046

Bodily pain

71.7 (25.6)**

5

62.3 (26.9) &&

6

53.1 (27.9) §§,

7

38.169

General health

66.2 (18.0)**

6

59.5 (18.0) &&

7

54.8 (17.7) §§

6

31.296

Vitality

59.5 20.0)**

8

55.7 (19.7) &&

8

52.1 (22.6) §§

8

9.954

Social functioning

82.6 (17.1)**

3

78.7 (18.0) &&

2

77.1 (20.0) §

2

10.373

Role-emotional

84.2 (31.0)*

2

79.0 (35.0) &

1

79.3 (32.5)

1

4.065

Mental health

65.1 (19.0)

7

64.0 (18.6)

5

62.3 (20.1)

4

1.365