Association between a genetic variant in the serotonin transporter gene (SLC6A4) and suicidal behavior in patients with schizophrenia

Table 1 Characteristics of Danish (DK), Norwegian (NO), and Swedish (SE) samples analyzed for association between serotonin transporter gene ( SLC6A4 ) polymorphisms and schizophrenia and suicide attempt among affected (cases) and control individuals

Country	Characteristics	Cases	Controls
DK	N	420	1004
	Gender (% women)	42.6	41.5
	Age	43.9 ± 12.3	43.2 ± 11.8
	Age of onset	27.2 ± 8.9
	No of suicide attempters	153
NO	N	162	177
	Gender (% women)	46.3	55.5
	Age	37.2 ± 10.7	38.7 ± 10.3
	Age of onset	27.6 ± 8.7
	No of suicide attempters	42
SE	N	255	292
	Gender (% women)	37.2	37.7
	Age	54.1 ± 15.2	50.3 ± 10.1
	Age of onset	24.6 ± 6.9
	No of suicide attempters	95

ISSN: 1744-9081