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. Author manuscript; available in PMC: 2009 Nov 15.
Published in final edited form as: Biol Psychiatry. 2008 Jul 2;64(10):896–900. doi: 10.1016/j.biopsych.2008.05.019

Table I.

Characteristics of twins with and without the metabolic syndrome (MetS).

Presence of MetS
No Yes
Characteristics N = 176 N = 147 P value
Age (mean years) 54.3 54.4 0.44
Education (mean years) 14.5 14.0 0.08
Physical activity (mean score) 7.76 7.15 0.0005
Current cigarette smoking (%) 16.5 19.0 0.58
History of major depression (%) 19.3 26.5 0.13

P values were corrected for pair cluster using GEE regression.

MetS: Metabolic Syndrome