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Table 5 Summary statistics for hierarchical linear regression analyses determining statistical predictors of intention to use protein powder

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

 R2∆R2∆FBSEBβp
Step 1.02.021.29    
 Age   −0.500.27−.13.061
 BMI   0.0020.04.00.958
 Ethnicity   0.160.30−.04.595
Step 2.10.0911.00***    
 Age   −0.310.26−.08.235
 BMI   0.020.04.04.580
 Ethnicity   0.180.29.04.636
 Muscularity (beliefs)   0.560.12.33< .001
 Body esteem   0.030.02.09.176
Step 3.30.1928.91***    
 Age   −0.190.23−.05.416
 BMI   −0.010.04−.02.746
 Ethnicity   0.040.26−.009.884
 Muscularity (beliefs)   0.370.11.22.001
 Body esteem   0.020.02.07.279
 Number of sports   0.210.09.14.019
 Weight training   1.780.26.41< .001
  1. *p < .05, **p < .01, ***p < .001