Table 1.

Sequential analysis results detecting signals in changes in psychotropic drug poisoning and suicide outcomes by age group

	Psychotropic drug poisoning			Suicide
	When critical value* was reached	Log likelihood	Relative risk	When critical value* was reached	Log likelihood	Relative risk
Adolescents	2007 Q4	5.12	1.34	2006 Q1	11.59	4.77
Young adults	2007 Q2	7.89	1.30	2006 Q3	4.62	1.79
Adults	N/A	N/A	N/A	N/A	N/A	N/A

^*Critical value = 4.42 based on alpha=0.05 and 2000 expected events under the null hypothesis for psychotropic drug poisonings for all age groups. Critical value = 3.95, 4.22, and 4.42 for adolescents, young adults, and adults respectively based on alpha = 0.05 and 100, 500, and 200 expected events under the null for completed suicides.