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Table 6 Summary statistics for hierarchical logistic regression determining statistical predictors of current protein powder use

From: Muscle building supplement use in Australian adolescent boys: relationships with body image, weight lifting, and sports engagement

 

X2 (df)

∆ X2 (df)

B

SEB

Wald

df

p

Odds Ratio

95% CI for Odds Ratio

Step 1

0.24 (3)

0.24 (3)

       

 Age

  

−0.08

.268

0.08

1

.773

.927

(.56, 1.55)

 Ethnicity

  

0.02

0.28

0.01

1

.944

.980

(.59, 1.78)

 BMI

  

0.02

0.04

0.15

1

.694

1.02

(.94, 1.10)

Step 2

7.20 (5)

6.96 (2)*

       

 Age

  

0.00

.27

0.00

1

.999

1.00

(.59, 1.69)

 Ethnicity

  

−0.06

.30

.0.04

1

.846

.945

(.54, 1.67)

 BMI

  

0.03

0.04

0.38

1

.540

1.03

(.95, 1.76)

 Muscularity (beliefs)

  

0.32

0.13

6.43

1

.011

1.37

(1.08, 1.76)

 Body esteem

  

0.01

0.02

0.316

1

.574

1.01

(.97, 1.06)

Step 3

39.20 (7)***

32.01 (2)***

       

 Age

  

0.01

.29

0.00

1

.969

1.15

(.57, 1.80)

 Ethnicity

  

0.08

0.31

0.06

1

.810

1.08

(.58, 2.00)

 BMI

  

−0.00

0.05

0.00

1

.963

1.00

(.91, 1.09)

 Muscularity (beliefs)

  

0.21

0.14

2.45

1

.117

1.24

(.95, 1.62)

 Body esteem

  

0.007

0.02

0.09

1

.763

1.00

(.96, 1.05)

 Number of sports

  

0.36

0.13

8.55

1

.003

1.44

(1.13, 1.84)

 Weight training

  

−1.35

0.31

19.09

1

< .001

3.84

(2.10, .7.02)

  1. *p < .05, **p < .01, ***p < .001