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Table 4 Multiple linear regression analysis for the incremental validity of the ICU

From: Callous-unemotional traits in Chinese preschool children with attention-deficit/hyperactivity disorder

  ADHD symptoms
β T P
Model 1
 Sex − 0.17 − 2.85 0.005
 OD 0.64 11.04 0.00
 R12 0.45   
Model 2
 Sex − 0.13 − 2.38 0.02
 OD 0.55 9.37 0.00
 CU 0.27 4.51 0.00
 R22 0.51   
 ΔR2 0.06