3.4. Regression analyses

Regression analyses were conducted to evaluate the influence of patients’ cognitive performance on their clinical scores. In particular, we sought at determining whether an abnormal dependence to the bias and/or to visual information was predictive of the severity of some symptoms dimensions. Independent analyses were thus made with the disorganization, SANS, and SAPS scores as dependent variables, and the ‘bias effect’ and the ‘Visual Information effect’ as explanatory factors. For each clinical score, we conducted regression analyses using the different cognitive scores independently (simple linear regressions) or their transformed values (simple non-linear regressions with logarithmic, polynomial or exponential transformations). Models with the highest adjusted R squared (R2) and a p-value ≤.05 are reported.