Table 1 Baseline descriptive characteristics by the treatment group in the Swedish Obese Subjects study.

From: Fifteen-year changes in health-related quality of life after bariatric surgery and non-surgical obesity treatment

Variable

Control (N = 2040)

Surgery (N = 2007)a

p valueb

Mean/%

SD/N

Mean/%

SD/N

Age (years)

48.7

6.3

47.2

5.9

<0.001

Men (%)

29.1

593

29.2

587

0.917

Married or partner (%)

75.3

1527

72.9

1460

0.098

Education

    

<0.001

 Basic (%)

59.9

1222

69.4

1393

 

 Upper secondary (%)

19.0

387

17.8

357

 

 University (%)

21.1

431

12.8

257

 

Diabetes (%)

12.9

263

17.2

344

<0.001

BMI (kg/m2)

40.1

4.7

42.4

4.5

<0.001

History of psychiatric disorder (%)

16.2

331

18.7

376

0.038

  1. aType of surgery: nonadjustable or adjustable banding (376 patients), vertical banded gastroplasty (1365 patients), and gastric bypass (266 patients).
  2. bDifferences between the treatment groups were tested using t-tests (continuous variables) or Fisher’s exact tests (categorical variables).
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