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. Author manuscript; available in PMC: 2016 Jan 4.
Published in final edited form as: Schizophr Res. 2014 Apr 24;156(1):71–75. doi: 10.1016/j.schres.2014.03.022

Table 1.

Descriptive statistics for both groups, with significance testing of differences by independent samples t-tests. SES measures utilized the Hollingshead-Redlich Scale. Cognitive variables represent Z-scores

Controls Patients
Mean SD Mean SD p





Age (years) 31.98 11.20 33.82 11.39 ns
Education (years) 15.36 1.98 13.40 2.15 < 0.001
Socioeconomic status 2.63 0.55 3.47 0.96 < 0.001
Parent SES 2.65 0.68 2.69 0.96 ns
Deletion Burden (total number) 11.93 4.64 12.06 4.02 ns
Deletion Burden (mean number base pairs) 117,972 176387 135,126 196,791 ns
Genetic Risk Score 6.88 0.81 6.88 0.70 ns
General Cognitive Ability 0.63 0.41 -0.51 0.92 < 0.001
Executive Function (overall) 0.39 0.34 -0.31 0.71 < 0.001
 Fluency 0.42 0.77 -0.46 0.86 < 0.001
 Planning 0.43 0.43 -0.29 1.28 < 0.001
 Inhibition 0.32 0.46 -0.18 0.98 < 0.001