Table 4.

Hierarchical regression model of analgesic misuse in an unfavorable situation.

Variable	R2	R2 Change	B	SE B	β	t
Step 1	0.03
Constant			2.43	0.80		3.02
Age			−0.02	0.03	−0.06	−0.65
Gender			−0.05	0.26	−0.02	−0.20
Competition participation			0.40	0.28	0.14	1.45
Step 2	0.17**	0.15**
Constant			1.14	0.80		1.43
Age			−0.03	0.03	−0.11	−1.21
Gender			−0.33	0.25	−0.12	−1.34
Competition participation			0.40	0.25	0.14	1.59
Doping attitudes			0.94	0.21	0.40**	4.53
Step 3	0.20**	0.03**
Constant			0.37	0.86		0.43
Age			−0.04	0.03	−0.12	−1.42
Gender			−0.22	0.25	−0.08	−0.89
Competition participation			0.38	0.25	0.13	1.51
Doping attitudes			0.89	0.21	0.38**	4.32
Worry			0.10	0.04	0.18*	2.15

^*p < 0.05,

^**p < 0.01. R², Proportion of variation in dependent variable; R² Change, Proportion of variation in dependent variable by independent variable; B, Unstandardized regression coefficient; SE B, Standard deviation of unstandardized regression coefficient; β, Standardized regression coefficient; t, T-statistic for regression coefficient.