Table 1 Descriptive statistics for dependent and control variables by periods and region of origin

From: Liberalization of European migration and the immigration of skilled people to Sweden

	Before treatment (1990–1993)				After treatment (1994–1997)
	EU-15		Other developed regions		EU-15		Other developed regions
	Mean	S.D.	Mean	S.D.	Mean	S.D.	Mean	S.D.
Low education	0.18	0.38	0.23	0.42	0.11	0.32	0.11	0.32
Middle education	0.36	0.48	0.44	0.50	0.31	0.46	0.37	0.48
High education	0.46	0.50	0.33	0.47	0.58	0.49	0.51	0.50
Inventor	0.006	0.076	0.002	0.045	0.010	0.101	0.003	0.053
Age	29.16	7.78	29.02	8.58	30.36	7.87	29.92	8.59
Female	0.40	0.49	0.49	0.50	0.39	0.49	0.51	0.50
Married	0.38	0.49	0.29	0.45	0.35	0.48	0.33	0.47
Children	0.24	0.43	0.25	0.43	0.23	0.42	0.23	0.42
Observations	4,845		14,614		6,156		9,651

Source: Statistics Sweden and CIRCLE data on inventors
SD standard deviation

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