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Table 10 Discrimination of the PANSS Items for General Psychopathology Subscale

From: Use of NON-PARAMETRIC Item Response Theory to develop a shortened version of the Positive and Negative Syndrome Scale (PANSS)

Criterion

1

2

3

4

5

Rating

G1.Somatic Concern

4 (No)

No

Somewhat

No

No

Weak

G2.Anxiety

5 (Yes)

No

Somewhat

No

Yes

Weak

G3.Guilt Feelings

4 (No)

No

No

No

No

Weak

G4.Tension

6 (Yes)

Yes

Yes

Yes

Yes

Very Good

G5.Mannerisms/Posturing

4 (No)

Somewhat

No

No

No

Weak

G6.Depression

5 (Yes)

Yes

Yes

Yes

Yes

Very Good

G7.Motor Retardation

5 (Yes)

Yes

Yes

No

No

Good

G8.Uncooperative

5 (Yes)

Yes

Yes

Yes

Yes

Very Good

G9.Unusual Thought Content

6 (Yes)

Yes

Yes

Yes

Yes

Very Good

G10.Disorientation

4 (No)

Somewhat

No

Yes

No

Weak

G11.Poor Attention

4 (No)

No

Somewhat

No

No

Weak

G12.Lack of Judgment

4 (No)

No

No

Yes

No

Weak

G13.Disturbance Volition

5 (Yes)

Yes

Yes

Yes

Yes

Very Good

G14.Poor Impulse control

6 (Yes)

Yes

Somewhat

Yes

Yes

Very Good

G15.Preoccupation

4 (No)

No

No

Yes

No

Weak

G16. Social Avoidance

4

No

No

No

No

Weak

  1. Note. Ratings are based on the operation criteria for item selection presented in Table 3.