On the use of rotated context questionnaires in conjunction with multilevel item response models

Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

Table 5 Countries in the analyses

Country	Region	OECD member	Science performance		Effective sample	Sample size
			*Mean*	SE	*Size* ^*
Colombia	South America	No	388	3.4	632	4,478
France	Western Europe	Yes	495	3.4	694	4,716
Germany	Western Europe	Yes	516	3.8	914	4,891
Hong Kong SAR	Asia	No	542	2.5	1,374	4,645
Jordan	Middle-East	No	422	2.8	1,003	6,509
Norway	Scandinavia	Yes	487	3.1	954	4,692
Poland	Central Europe	Yes	498	2.3	1,472	5,547
Russian Federation	Eastern Europe/Asia	No	479	3.7	597	5,799
United States	North America	Yes	489	4.2	630	5,611

Note: *Effective sample size in each country, taking into account the inflation of the total variance due to measurement error and complex sampling design (Design Effect 5). Values for science are taken from Table 11.15 on page 202 of the PISA 2006 technical report (OECD, 2008).