Table 1.

Calibrated Item Parameters From the PROMIS Anxiety Item Bank.

		Threshold
Item	Slope	1	2	3	4
1. I found it hard to focus on anything other than my anxiety	3.86	0.41	1.20	2.05	2.84
2. My worries overwhelmed me	3.64	0.29	0.96	1.71	2.56
3. I felt uneasy	3.64	−0.31	0.52	1.50	2.44
4. I felt fearful	3.58	0.27	1.02	1.90	2.64
5. I felt like I needed help for my anxiety	3.53	0.47	0.98	1.80	2.32
6. I felt frightened	3.43	0.42	1.26	2.09	2.82
7. I felt nervous	3.38	−0.29	0.56	1.58	2.67
8. I felt anxious	3.34	−0.27	0.53	1.51	2.38
9. I felt tense	3.33	−0.59	0.24	1.18	2.23
10. It scared me when I felt nervous	3.32	0.55	1.17	2.00	2.70

Note. PROMIS = Patient Reported Outcomes Measurement Information Systems.