Skip to main content
. Author manuscript; available in PMC: 2024 Feb 1.
Published in final edited form as: Schizophr Res. 2023 Jan 4;252:1–9. doi: 10.1016/j.schres.2022.12.034

Table 4.

Results of Non-Linear Regression Analyses Using Aggregate Scores on Negative Affect to Predict Composite Cognitive Performance and Absolute Values of Introspective Accuracy Across Participants with Diagnoses of Schizophrenia and Bipolar Disorder

Schizophrenia
R 2 F df1 df2 p b1 b2
   Cognition
Linear Term .01 1.20 1 125 .28 −.05
 
Quadratic Term .01 0.70 1 124 .51 −.14 .01
 
  R 2 F df1 df2 p b1 b2
   Introspective Accuracy
Linear Term 0.00 .041 1 125 .84 −.01
 
Quadratic Term .001 .076 2 124 .93 .029 −.01
 
 
Bipolar Disorder
 
  R 2 F df1 df2 p b1 b2
   Cognition
Linear Term .01 0.08 1 113 .78 .014
 
Quadratic Term .10 5.59 1 112    .005 .81 −.13
 
  R 2 F df1 df2 p b1 b2
   Introspective Accuracy
Linear Term .06 7.13 1 113    .009 .06
 
Quadratic Term .07 4.01 1 112    .021 −.04 .02

Note: Non-linear regression analyses in the prediction of negative affect (NA) on cognitive test performance or introspective accuracy (IA) in the two samples.

b1 is the slope of the linear term

b2 is the slope of the quadratic term