Table 3.

PROMIS depression bank parameters (graded response model)

Item	Slope	Threshold1	Threshold2	Threshold3	Threshold4
I felt unhappy	3.483	−0.536	0.348	1.347	2.355
I felt discouraged about the future	3.183	−0.261	0.397	1.306	2.134
I felt disappointed in myself	3.093	−0.358	0.413	1.404	2.224
I felt sad	3.274	−0.499	0.406	1.413	2.376
I felt emotionally exhausted	2.685	−0.299	0.424	1.358	2.308
I felt depressed	4.343	−0.117	0.598	1.428	2.273
I felt pessimistic	2.381	−0.458	0.478	1.546	2.632
I felt lonely	2.588	−0.079	0.633	1.477	2.328
I felt that my life was empty	3.185	0.198	0.782	1.526	2.324
I found that things in my life were overwhelming	3.106	0.044	0.722	1.639	2.472
I had trouble feeling close to people	2.564	−0.038	0.693	1.653	2.584
I felt like a failure	3.970	0.204	0.796	1.649	2.296
I withdrew from other people	2.802	0.148	0.772	1.603	2.538
I felt that I had nothing to look forward to	3.932	0.305	0.913	1.594	2.412
I felt that I was not needed	2.920	0.204	0.891	1.655	2.528
I felt that I was to blame for things	2.736	0.073	0.810	1.803	2.673
I felt helpless	4.145	0.350	0.915	1.678	2.471
I felt that I was not as good as other people	2.333	0.186	0.947	1.729	2.633
I felt worthless	4.261	0.401	0.976	1.696	2.444
I had trouble making decisions	2.613	−0.023	0.868	1.864	2.826
I felt that nothing could cheer me up	3.657	0.312	0.982	1.782	2.571
I felt that nothing was interesting	2.834	0.141	0.907	1.846	2.875
I felt guilty	2.018	−0.050	0.926	2.000	2.966
I felt that I wanted to give up on everything	3.241	0.461	1.034	1.834	2.515
I felt hopeless	4.454	0.558	1.074	1.779	2.530
I felt ignored by people	2.364	0.210	0.987	1.906	2.934
I felt upset for no reason	2.549	0.194	1.012	2.013	3.127
I felt I had no reason for living	3.131	0.918	1.481	2.164	2.856