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

Table 13 Summed-Score Conversion Table for the Mini-PANSS and 30-item Positive Symptoms PANSS subscale based on expected total score

6 Item Positive Mini-PANSS	7 Item Positive Original PANSS	6 Item Positive Mini-PANSS	7 Item Positive Original PANSS
6	7	19	22
7	8	20	23
8	9	21	24
9	10	22	25
10	11	23	26
11	13	24	28
12	14	25	29
13	15	26	30
14	16	27	32
15	17	28	33
16	18	29	34
17	20	30	35
18	21	31	37

Note. Total scores on the Positive subscale for the 19-item Mini-PANSS are not presented for total scores > 32 based on expected total score ranges of the dataset used.

ISSN: 1471-244X

6 Item Positive Mini-PANSS	7 Item Positive Original PANSS	6 Item Positive Mini-PANSS	7 Item Positive Original PANSS
6	7	19	22
7	8	20	23
8	9	21	24
9	10	22	25
10	11	23	26
11	13	24	28
12	14	25	29
13	15	26	30
14	16	27	32
15	17	28	33
16	18	29	34
17	20	30	35
18	21	31	37

6 Item Positive Mini-PANSS	7 Item Positive Original PANSS	6 Item Positive Mini-PANSS	7 Item Positive Original PANSS
6	7	19	22
7	8	20	23
8	9	21	24
9	10	22	25
10	11	23	26
11	13	24	28
12	14	25	29
13	15	26	30
14	16	27	32
15	17	28	33
16	18	29	34
17	20	30	35
18	21	31	37

6 Item Positive Mini-PANSS	7 Item Positive Original PANSS	6 Item Positive Mini-PANSS	7 Item Positive Original PANSS
6	7	19	22
7	8	20	23
8	9	21	24
9	10	22	25
10	11	23	26
11	13	24	28
12	14	25	29
13	15	26	30
14	16	27	32
15	17	28	33
16	18	29	34
17	20	30	35
18	21	31	37