Table 4 Differential Item Functioning (Dif) In Forensic Patients With Ssd And Controls.

From: Evaluating the PANSS using item response theory in forensic psychiatric samples from five European nations

 

X2

df

p

Positive Subscale

P1 Delusions

14.726

6

0.022

P2 Conceptual Disorganization

11.402

6

0.077

P3 Hallucinatory Behavior

22.958

6

0.001

P4 Excitement

6.953

5

0.224

P5 Grandiosity

3.459

6

0.749

P6 Suspiciousness/Persecution

18.811

6

0.004

P7 Hostility

13.397

5

0.020

Negative Subscale

N1 Blunted Affect

7.965

6

0.241

N2 Emotional Withdrawal

10.84

6

0.093

N3 Poor Rapport

10.12

5

0.072

N4 Passive/Apathetic Social Withdrawal

11.279

6

0.080

N5 Difficulty in Abstract Thinking

20.501

6

0.002

N6 Lack of Spontaneity and flow of Conversation

11.211

6

0.082

N7 Stereotyped Thinking

21.828

6

0.001

General Subscale

G1 Somatic Concern

7.195

6

0.303

G2 Anxiety

22.462

5

0.000

G3 Guilt feelings

9.902

6

0.129

G4 Tension

12.303

4

0.015

G5 Mannerism and Posturing

18.009

5

0.003

G6 Depression

9.69

6

0.138

G7 Motor Retardation

5.624

6

0.467

G8 Uncooperativeness

15.425

5

0.009

G9 Unusual Thought Content

21.978

6

0.001

G10 Disorientation

4.456

5

0.486

G11 Poor Attention

19.59

5

0.001

G12 Lack of Judgment and Insight

103.827

6

0.000

G13 Disturbance of Volition

9.144

4

0.058

G14 Poor Impulse Control

3.794

5

0.579

G15 Preoccupation

15.444

6

0.017

G16 Active Social Avoidance

6.133

6

0.408

  1. Bold: p < 0.05.