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Table 3 Overall and age-adjusted prevalence of purging and pill use in each age group by Wave

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

 

Purging

Diet pill use

Age group

Wave

Cases (n)

Population (N)

Rate per 100,000

Age-adjusted rate per 100,000

Cases (n)

Population (N)

Rate per 100,000

Age-adjusted rate per 100,000

11-13

1

13

2846

456.78

89.56

9

2846

316.23

62.01

2

0

675

0.00

0.00

3

675

444.44

87.15

3

Total:

13

3521

369.21

72.39

12

3521

340.81

66.83

14-16

1

50

10460

478.01

92.52

59

10460

564.05

109.18

2

50

7259

688.80

133.33

54

7259

743.90

143.99

3

Total:

100

17719

564.37

109.24

113

17719

637.73

123.44

17-19

1

22

7223

304.58

60.33

61

7223

844.52

167.28

2

35

6502

538.30

106.62

61

6502

938.17

185.82

3

9

1568

573.98

113.69

45

1568

2869.90

568.44

Total:

66

15293

431.57

85.48

167

15293

1092.00

216.29

20-22

1

1

77

1298.70

243.20

0

77

0.00

0.00

2

2

176

1136.36

212.80

3

176

1704.55

319.20

3

31

7266

426.64

79.90

246

7266

3385.63

634.01

Total:

34

7519

452.19

84.68

249

7519

3311.61

620.15

23+

1

2

3

26

6216

418.28

94.12

277

6216

4456.24

1002.77

Total:

26

6216

418.28

94.12

277

6216

4456.24

1002.77

  1. Those cells where there are no observations are indicated by --. Data used for the weighted rates comes from the 2000 United States Census.