Table 5.

Results of hierarchical regression analysis.

		Step 1	Step 2	Step 3	Step 4	Step 5	Step 6
		β	β	β	β	β	β
1	Risk and delinquent behavior	0.340***	0.291***	0.263***	0.111***	0.093**	0.078*
2	Peer gambling		0.181**	0.179**	0.130**	0.088**	0.075*
3	Superstition and incorrect understanding of probability and chance			0.091*	−0.022	−0.031	−0.027
	Illusion of control			0.101*	0.056	0.041	0.041
4	Motive to earn money				0.183***	0.086**	0.065*
	Motive to relax				0.204***	0.155***	0.141***
	Motive to be better in gambling				0.233***	0.190***	0.176***
	Motive to feel better				0.049	0.025	0.029
5	Experience of winning a large sum of money					0.227***	0.180***
	Drive to continue with gambling after winning a large sum of money					0.147***	0.144***
6	Mean frequency of gambling						0.134***
	Total model
	R	0.340	0.382	0.417	0.595	0.642	0.651
	Adj. R2	0.114	0.144	0.170	0.347	0.404	0.415
	ΔR2	0.116***	0.030***	0.028***	0.180***	0.059***	0.011***

β, standardized beta coefficient; R, multiple correlation coefficient; Adj. R², the adjusted coefficient of determination; ΔR², R² change;

^*p < 0.050;

^**p < 0.010;

^***p < 0.001.