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Table 1 Characteristics of participants by body mass index category

From: Impact of metabolic comorbidity on the association between body mass index and health-related quality of life: a Scotland-wide cross-sectional study of 5,608 participants

 

Underweight

Normal weight

Overweight

Obese

Morbidly obese

‡ p-value

Overall

 

N = 67

N = 1,797

N = 2,276

N = 1,319

N = 149

 

N = 5, 608

 

N (%)

N (%)

N (%)

N (%)

N (%)

 

N (%)

Age (years)

       

   20-44

32 (47.8)

937 (52.1)

858 (37.7)

440 (33.4)

54 (36.2)

< 0.001

2,321 (41.4)

   45-64

21 (31.3)

562 (31.3)

916 (40.3)

549 (41.6)

75 (50.3)

 

2,123 (37.9)

   ≥ 65

14 (20.9)

298 (16.6)

502 (22.1)

330 (25.0)

20 (13.4)

 

1, 164 (20.8)

Sex

   Male

26 (38.8)

688 (38.3)

1,183 (52.0)

598 (45.3)

36 (24.2)

< 0.001

2,531 (45.1)

   Female

41 (61.2)

1,109 (61.7)

1,093 (48.0)

721 (54.7)

113 (75.8)

 

3,077 (54.9)

Deprivation quintile

   1 (Least deprived)

14 (20.9)

389 (21.7)

498 (21.9)

218 (16.5)

16 (10.7)

< 0.001

1,135 (20.2)

   2

11 (16.4)

413 (23.0)

537 (23.6)

258 (19.6)

30 (20.1)

 

1,249 (22.3)

   3

9 (13.4)

385 (21.4)

503 (22.1)

337 (25.6)

29 (19.5)

 

1,263 (22.5)

   4

14 (20.9)

322 (17.9)

427 (18.8)

276 (20.9)

26 (17.6)

 

1,065 (19.0)

   5 (Most deprived)

19 (28.4)

288 (16.0)

311 (13.7)

230 (17.4)

48 (32.2)

 

896 (16.0)

Metabolic comorbidity

       

   No

59 (88.1)

1,632 (90.8)

1,899 (83.4)

990 (75.0)

107 (71.8)

< 0.001

4,687 (83.6)

   Yes

8 (12.0)

165 (9.2)

377 (16.6)

329 (25.0)

42 (28.2)

 

921 (16.4)

Smoking status

       

Never smoker

21 (31.3)

748 (41.6)

1, 002 (44.0)

599 (45.4)

60 (40.3)

< 0.001

2, 430 (43.3)

   Ex-smoker

7 (10.5)

409 (22.8)

737 (32.4)

447 (33.9)

56 (37.6)

 

1, 656 (29.5)

   Current smoker

39 (58.2)

640 (35.6)

537 (23.6)

273 (20.7)

33 (22.2)

 

1, 522 (27.1)

Drinking status

       

   Never drinker

12 (17.9)

89 (5.0)

106 (4.7)

72 (5.5)

8 (5.4)

< 0.001

287 (5.1)

   Ex-drinker

5 (7.5)

83 (4.6)

85 (3.7)

62 (4.7)

14 (9.4)

 

249 (4.4)

   Sensible drinker*

39 (58.2)

1, 266 (70.5)

1, 560 (68.5)

936 (70.9)

100 (67.1)

 

3, 901 (69.5)

   Excessive drinker

11 (16.4)

352 (19.7)

522 (23.0)

246 (18.7)

27 (18.1)

 

1, 158 (20.7)

   Missing

0 (0)

7 (0.39)

3 (0.13)

3 (0.23)

0 (0)

 

13 (0.23)

  1. ‡chi-square tests for trend * < 21 units/week for men, < 14 units/week for women
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