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. Author manuscript; available in PMC: 2010 Nov 1.
Published in final edited form as: Intelligence. 2009 Nov 1;37(6):529–534. doi: 10.1016/j.intell.2008.12.001

Table 3.

Cognition function measures in the total population and the high and low SES groups.

Total
population		 High SES Low SES†
N=5292 N=2320 N=2972 p‡
Memory (Range 0–20) M (SD) 6.9 (2.4) 7.3 (2.3) 6.6 (2.5) p<0.001
AH4-I (Range 0–65) M (SD) 47.0 (10.9) 52.5 (7.3) 42.7 (11.3) p<0.001
Mill Hill (Range 0–33) M (SD) 25.1 (4.4) 27.2 (2.7) 23.5 (4.8) p<0.001
Phonemic fluency (Range 0–35) M (SD) 17.0 (4.4) 18.3 (4.2) 15.9 (4.3) p<0.001
Semantic fluency (Range 0–35) M (SD) 16.5 (4.2) 17.9 (3.8) 15.5 (4.2) p<0.001
†

Includes low and intermediate employment grade.

‡

Difference between the high and low SES grouṗ

M: Mean; SD: Standard Deviation