Table 2.

Sociodemographic Characteristics for All Convicted Female Arson Offenders in Sweden 1988–2000 and Population Control Subjects

Variable	Arson Offenders (N = 349)		Population Control Subjects (N = 20 597)		Statistic
	Value	N	Value	N
Age (y), mean (SD)	31.2 (12.4)	349	47.6 (20.1)	20 597	t = 24 [380], P < .001
Income (individual), mean (SD), SEK	24 361 (37 320)	211	86 024 (114 079)	19 501	t = 23 [255], P < .001
Income (household), mean (SD), SEK	122 205 (96 473)	210	202 233 (197 440)	19 427	t = 12 [228], P = .04
Days unemployed, mean (SD)	8.5 (32.2)	349	10.1 (42.5)	20 597	t = 0.9 [369], P = .15
Social welfare, % (N)	56.2 (118)	210	5.6 (1086)	19 427	${\mathrm{\chi }}_1^2=924,$ OR = 21.7 (95% CI = 16.4–28.6)
Single household, % (N)	76.5 (156)	204	43.7 (8377)	19 169	${\mathrm{\chi }}_1^2=88,$ OR = 4.2 (95% CI = 3.0–5.8)
Civil status—unmarried, % (N)	63.0 (220)	349	32.0 (6592)	20 597	${\mathrm{\chi }}_1^2=151,$ OR = 3.6 (95% CI = 2.9–4.5)
Children, % (N)	38.4 (134)	349	47.6 (9806)	20 597	${\mathrm{\chi }}_1^2=12,$ OR = 0.7 (95% CI = 0.6–0.9)
Immigrant, % (N)	18.6 (65)	349	9.4 (1929)	20 957	${\mathrm{\chi }}_1^2=34,$ OR = 2.2 (95% CI = 1.7–2.9)
Metropolitan area, % (N)	33.0 (114)	345	28.8 (5939)	20 957	${\mathrm{\chi }}_1^2=3,$ OR = 1.2 (95% CI = 1.0–1.5)
Highest education, % (N)		183		17 052	${\mathrm{\chi }}_3^2=43.0,$P < .0001
Elementary school	61.7 (113)		41.1 (7006)
High school	34.4 (63)		39.3 (6705)
Undergraduate (university)	3.8 (7)		19.3 (3292)
Graduate (PhD)	0 (0)		0.3 (49)

Note: SEK, Swedish krona; OR, odds ratio; CI, confidence interval.