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Table 1 Univariate analysis of weight loss maintenance at the 12-month follow-up

From: Predictors of successful long-term weight loss maintenance: a two-year follow-up

Variable

Successful

Unsuccessful

P value

Number

34

52

 

Physical characteristics

   

 Age (years)

50.6 ± 10.9

46.8 ± 11.7

0.14

 Pre BMI (kg/m2)

30.7 ± 4.9

31.6 ± 4.7

0.41

 Pre BMI ≥ 40 kg/m2 (%)

5.9

3.8

0.65

 Pre BMI ≥ 35 kg/m2 (%)

17.6

17.3

0.97

 Pre BW (kg)

75.0 ± 12.1

77.9 ± 12.3

0.30

 ∆ BW (kg)

−13.3 ± 5.6

−8.4 ± 2.6

<0.0001

Social status (%)

   

 Level of schooling, >12 years

50.0

46.2

0.73

 Employment status, working

58.8

59.6

1.0

 Marital status, married

61.8

65.3

0.73

Obesity-related comorbidities (%)

   

 Type 2 diabetes mellitus

20.6

34.6

0.16

 Hypertension

20.6

34.6

0.16

Psychological characteristics (score)

   

 Pre CES-D

9.7 ± 7.2

12.3 ± 6.5

0.085

 Post CES-D

9.7 ± 7.2

15.0 ± 10.1

<0.01

 Pre STAI-state

39.9 ± 7.4

41.9 ± 10.6

0.34

 Post STAI-state

41.5 ± 10.6

42.5 ± 11.2

0.68

 Pre STAI-trait

42.2 ± 10.8

45.2 ± 12.8

0.26

 Post STAI-trait

42.2 ± 10.6

42.5 ± 11.2

0.68

 Pre BES

12.2 ± 6.9

13.0 ± 6.4

0.56

 Post BES

5.6 ± 4.7

8.4 ± 5.8

0.021

 Pre dietary restraint (TFEQ)

7.6 ± 3.8

7.6 ± 4.0

0.99

 Post dietary restraint (TFEQ)

16.0 ± 3.0

15.0 ± 3.2

0.14

 Pre disinhibition (TFEQ)

8.9 ± 3.6

9.8 ± 3.9

0.28

 Post disinhibition (TFEQ)

5.7 ± 3.1

7.5 ± 3.6

0.025

 Pre hunger (TFEQ)

6.0 ± 2.9

6.4 ± 2.9

0.55

 Post hunger (TFEQ)

2.9 ± 2.5

4.1 ± 2.8

0.064

 Pre YFAS symptom

1.9 ± 1.5

2.2 ± 1.4

0.27

 Post YFAS symptom

1.7 ± 0.97

2.7 ± 1.6

0.001

  1. Quantitative data are shown as mean ± SD. Qualitative data are shown as percentage. Two-sample t-test and χ 2-test or Fisher’s exact test were used
  2. Intervention was judged successful for subjects who lost at least 10% of their initial weight during the weight loss intervention and had maintained the loss at the12-month follow-up. Intervention was unsuccessful for subjects who did not meet the above criteria at the 12-month follow-up
  3. Pre: data at the beginning of the weight loss intervention
  4. Post: data at the end of the weight loss intervention
  5. ∆ BW: Body weight at the end of weight loss intervention minus body weight at the beginning of weight loss intervention
  6. BMI Body Mass Index, BW Body Weight, CES-D Center for Epidemiologic Studies-Depression Scale, STAI State-Trait Anxiety Inventory, BES Binge Eating Scale, TFEQ Three Factor Eating Questionnaire, YFAS Yale Food Addiction Scale