Development and Validation of the Occupational Therapy Engagement Scale for Patients with Stroke

Table 3

Raw sum scores, Rasch scores, and standard errors of the occupational therapy engagement scale (OTES).

Raw sum score	Rasch score	Standard error
0	-8.0	1.7
1	-6.0	1.2
2	-4.9	0.8
3	-4.3	0.7
4	-3.9	0.6
5	-3.5	0.6
6	-3.2	0.6
7	-2.9	0.5
8	-2.6	0.5
9	-2.4	0.5
10	-2.1	0.5
11	-1.9	0.5
12	-1.7	0.5
13	-1.4	0.5
14	-1.2	0.5
15	-1.0	0.5
16	-0.7	0.5
17	-0.5	0.5
18	-0.2	0.5
19	0.1	0.5
20	0.3	0.5
21	0.6	0.5
22	0.9	0.6
23	1.2	0.6
24	1.6	0.6
25	1.9	0.6
26	2.2	0.6
27	2.5	0.6
28	2.8	0.6
29	3.2	0.6
30	3.5	0.6
31	3.8	0.6
32	4.2	0.6
33	4.6	0.7
34	5.2	0.8
35	6.0	1.1
36	7.3	1.9

^†No patients had scores of zero or within the range of 2–5; thus, we applied the maximum likelihood method to simulate the Rasch scores of the corresponding raw sum scores.