Table 1

Prevalence of binge eating and compensatory behaviours by time points and gender1

T1

T2

T3

χ2 for time trend (d.f. 1)


N

%

n

%

n

%


Males

3771

46.9

1207

44

1194

43.8

-

Binge eatinga

368

13.8

79

7.9

56

6.1

49.9***

CB - purging:

Self-induced vomitinga

8

0.2

0

0.0

2

0.2

0.5ns

Taking laxatives

9

0.2

1

0.1

0

0

3.7ns

Taking diuretics

8

0.2

2

0.2

4

0.3

0.4ns

CB - non-purging:

Taking diet pillsb, c

12

0.3

3

0.2

10

0.8

4.6*

Excessive exercisea, c

430

11.7

113

9.5

162

13.6

1.4ns

Fasting

35

1.3

4

0.4

5

0.5

6.3**

Females

4273

53.1

1536

56

1530

56.2

-

Binge eating

491

16.8

60

6.9

50

5.6

95.7***

CB - purging:

Self-induced vomiting

55

1.3

27

1.8

10

0.6

2.3ns

Taking laxatives

9

0.2

7

0.5

4

0.3

0.3ns

Taking diuretics

12

0.3

6

0.4

3

0.2

0.1ns

CB - non-purging:

Taking diet pills

20

0.5

23

1.5

31

2.1

30.1***

Excessive training

602

14.3

178

11.7

143

9.4

25.9***

Fasting

25

0.8

2

0.2

1

0.1

8.1**


*p < .05, **p < .01, ***p < .001, n number, ns non significant, df degrees of freedom, CB Compensatory behaviours, T1, T2, and T3 time points 1, 2 and 3, respectively

1Prevalence is assigned only to those individuals who had behaviours at least once per week.

aSignificant gender differences at T1 (p < .05)

bSignificant gender differences at T2 (p < .05)

cSignificant gender differences at T3 (p < .05)

Abebe et al. BMC Public Health 2012 12:32   doi:10.1186/1471-2458-12-32

Open Data