Table 2.

Differences in mean PSTRE-scores by socio-economic background.

Books at Home at Age 16	N	Mean	DiffAbs	Diff. in %
Men
10 books or less	99	271.40	0.00	0.00
11 to 25 books	190	274.13	2.73	1.01
26 to 100 books	495	291.15	17.01	6.21
101 to 200 books	225	300.93	9.78	3.36
More than 200 books	294	304.69	3.76	1.25
Women
10 books or less	74	257.54	0.00	0.00
11 to 25 books	140	264.58	7.03	2.73
26 to 100 books	445	283.65	19.07	7.21
101 to 200 books	249	289.37	5.72	2.02
More than 200 books	331	297.46	8.09	2.80