Demographic, clinical, neurocognitive, obstetric and cortical variables for concordant, discordant and healthy MZ twin pairs.

Abbreviations: m = males; f = females;+ = lifetime diagnoses according to the Diagnostic and Statistical Manual of Mental Disorders; SD = standard deviation; IQ = intellectual quotient; BW = birth weight; ICV = total intracranial volume; SA = surface areaa = X-square and p-value estimates for gender data were obtained using Monte Carlo tests with 106 replicatesb = Kruskal-Wallis X-square, as these variables were continuous* = statistically significant p-value.Demographic, clinical, neurocognitive, obstetric and cortical variables for concordant, discordant and healthy MZ twin pairs.