Table 1. Item measure and fit coefficients, point-correlation with measure coefficients, and coding reference for reduced ProQOL-21 item set.

ProQOL Item	Measure	Model SE	Infit Mnsq	Outfit Mnsq	Pt. r	Coding
Compassion Fatigue
26 (Male)	-1.89	0.19	1.01	0.93	0.73	12233
26 (Female)	-1.33	0.06	1.08	1.19	0.62	12233
21	-1.26	0.04	1.34	1.34	0.70	12345
19	-1.24	0.04	1.21	1.22	0.72	12345
23	0.01	0.05	1.13	1.24	0.58	12333
10	0.17	0.04	0.92	0.90	0.69	12344
11	0.24	0.04	0.73	0.75	0.74	12344
9	0.40	0.04	0.91	0.93	0.74	12345
8	0.51	0.05	1.00	1.14	0.64	12344
14	0.85	0.05	0.90	0.85	0.66	12344
25 (Male)	0.94	0.18	0.86	0.69	0.71	12344
13	1.24	0.05	0.88	0.90	0.70	12345
25 (Female)	1.37	0.06	0.86	0.67	0.60	12344
Compassion Satisfaction
30	-0.96	0.05	0.92	0.90	0.75	11234
3	-0.73	0.06	0.9	0.91	0.71	11123
22	-0.44	0.05	0.95	0.93	0.77	11234
16	-0.19	0.05	1.14	1.15	0.72	11234
20	-0.19	0.05	0.93	0.92	0.77	11234
24	-0.01	0.06	0.76	0.72	0.77	11123
18	0.06	0.05	1.05	1.07	0.75	11234
6	0.17	0.05	1.33	1.35	0.68	11234
12	0.21	0.06	0.93	0.93	0.73	11123
27	2.06	0.06	1.09	1.12	0.69	11123

Measure = item difficulty relative to the underlying factor. Mnsq = Mean-square estimate. Pt. r = Point-correlation with measure. Coding = Modification of the original scoring approach (i.e., 12345 for original responses ‘Never’, ‘Almost Never’, ‘Sometimes’, ‘Often’, and ‘Very Often’, respectively) to reflect the collapsed response categories where appropriate.