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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)BSEBWalddfpOdds Ratio95% CI for Odds Ratio
Step 10.24 (3)0.24 (3)       
 Age  −0.08.2680.081.773.927(.56, 1.55)
 Ethnicity  0.020.280.011.944.980(.59, 1.78)
 BMI  0.020.040.151.6941.02(.94, 1.10)
Step 27.20 (5)6.96 (2)*       
 Age  0.00.270.001.9991.00(.59, 1.69)
 Ethnicity  −0.06.30.0.041.846.945(.54, 1.67)
 BMI  0.030.040.381.5401.03(.95, 1.76)
 Muscularity (beliefs)  0.320.136.431.0111.37(1.08, 1.76)
 Body esteem  0.010.020.3161.5741.01(.97, 1.06)
Step 339.20 (7)***32.01 (2)***       
 Age  0.01.290.001.9691.15(.57, 1.80)
 Ethnicity  0.080.310.061.8101.08(.58, 2.00)
 BMI  −0.000.050.001.9631.00(.91, 1.09)
 Muscularity (beliefs)  0.210.142.451.1171.24(.95, 1.62)
 Body esteem  0.0070.020.091.7631.00(.96, 1.05)
 Number of sports  0.360.138.551.0031.44(1.13, 1.84)
 Weight training  −1.350.3119.091< .0013.84(2.10, .7.02)
  1. *p < .05, **p < .01, ***p < .001