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Table 1 Prevalence and change in UWCB among male and female participants, Waves I-III

From: Prevalence and correlates of unhealthy weight control behaviors: findings from the national longitudinal study of adolescent health

 

Wave I

Wave II

Wave III

Mixed model

 

N

%

N

%

N

%

Coefficient

Standard error

p

Males

Purgingabc

24

0.24%

14

0.20%

9

0.13%

0.00

0.00

0.11

 Vomitingabc

16

0.16%

12

0.17%

4

0.06%

0.00

0.00

0.09

 Laxative Useabc

8

0.08%

3

0.04%

6

0.08%

0.00

0.00

0.97

Pill Use Onlyabc

17

0.17%

15

0.21%

109

1.54%

0.01

0.00

0.00

No UWCB

10132

99.60%

7077

99.59%

6977

98.34%

Females

Purging

62

0.59%

73

0.97%

57

0.72%

0.00

0.00

0.25

 Vomiting

32

0.31%

50

0.67%

23

0.29%

0.00

0.00

0.90

 Laxative Use

32

0.31%

29

0.39%

39

0.49%

0.00

0.00

0.048

Pill Use Only

112

1.07%

106

1.41%

409

5.14%

0.02

0.00

0.00

No UWCB

10259

98.33%

7327

97.62%

7489

94.14%

  1. aSignificant gender differences at T1 (p < 0.05), bSignificant gender differences at T2 (p < 0.05), cSignificant gender differences at T3 (p < 0.05).