Table 6.

Cox regression (forward likelihood ratio [LR]), significant variables in the equation, n = 1161.

	Variable	Significance	Hazard ratio
Step 3	Problems at school	0.031	2.623
	Behavioral disorder	0.004	2.903
	General psychiatric care	0.014	2.449

Note: Survival time is defined as the length of the interval between diagnosis and death or end of follow-up.