Developing a short-form version of the HIV Disability Questionnaire (SF-HDQ) for use in clinical practice: a Rasch analysis

Table 8 Conversation table - Physical domain (10 items)—raw summed scores to predicted Rasch person scores for SF-HDQ physical domain

Physical domain (10 items)
Raw summed score—total Range: 0–39	Model predicted person score (location)	Model predicted person score (0–100 scale)
0	− 4.075	0
1	− 3.261	6
2	− 2.703	11
3	− 2.321	16
4	− 2.026	20
5	− 1.783	24
6	− 1.575	28
7	− 1.393	31
8	− 1.230	34
9	− 1.083	37
10	− 0.948	39
11	− 0.823	41
12	− 0.705	43
13	− 0.594	45
14	− 0.489	46
15	− 0.387	47
16	− 0.289	48
17	− 0.194	49
18	− 0.101	50
19	− 0.009	51
20	0.082	52
21	0.173	53
22	0.264	54
23	0.356	55
24	0.450	56
25	0.546	57
26	0.645	59
27	0.748	60
28	0.856	62
29	0.970	64
30	1.093	66
31	1.226	68
32	1.371	71
33	1.535	74
34	1.722	77
35	1.943	81
36	2.215	85
37	2.573	90
38	3.107	95
39	3.903	100

ISSN: 1477-7525