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

Table 15 Summed-Score Conversion Table for the 19-item and 30-item General Psychopathology Symptoms PANSS based on expected total score.

7 Item General Mini-PANSS	16 Item General Original PANSS	7 Item General Mini-PANSS	16 Item General Original PANSS
7	19	20	45
8	23	21	47
9	25	22	49
10	27	23	51
11	29	24	52
12	30	25	54
13	33	26	56
14	34	27	58
15	36	28	60
16	38	29	62
17	40	30	64
18	41	31	66
19	43	32	67

Note. The 30-Item General Psychopathology subscale ranges from a total score of 16 to 112; the 19-item PANSS for the General Psychopathology subscale ranges from a score of 7 to 49. Total scores on the General Psychopathology subscale for the 19-item Mini-PANSS are not presented for total scores > 31 based on expected total score ranges of the dataset used.

ISSN: 1471-244X

7 Item General Mini-PANSS	16 Item General Original PANSS	7 Item General Mini-PANSS	16 Item General Original PANSS
7	19	20	45
8	23	21	47
9	25	22	49
10	27	23	51
11	29	24	52
12	30	25	54
13	33	26	56
14	34	27	58
15	36	28	60
16	38	29	62
17	40	30	64
18	41	31	66
19	43	32	67

7 Item General Mini-PANSS	16 Item General Original PANSS	7 Item General Mini-PANSS	16 Item General Original PANSS
7	19	20	45
8	23	21	47
9	25	22	49
10	27	23	51
11	29	24	52
12	30	25	54
13	33	26	56
14	34	27	58
15	36	28	60
16	38	29	62
17	40	30	64
18	41	31	66
19	43	32	67

7 Item General Mini-PANSS	16 Item General Original PANSS	7 Item General Mini-PANSS	16 Item General Original PANSS
7	19	20	45
8	23	21	47
9	25	22	49
10	27	23	51
11	29	24	52
12	30	25	54
13	33	26	56
14	34	27	58
15	36	28	60
16	38	29	62
17	40	30	64
18	41	31	66
19	43	32	67