Psychometric evaluation of the PROMIS® Depression Item Bank: an illustration of classical test theory methods

Sandra Nolte; Cheryl Coon; Stacie Hudgens; Mathilde G. E. Verdam

doi:10.1186/s41687-019-0127-0

Journal of Patient-Reported Outcomes

Table 3 Factor loadings for the unidimensional factor models of the PROMIS Depression Item Bank

From: Psychometric evaluation of the PROMIS® Depression Item Bank: an illustration of classical test theory methods

51 items	Factor loading	Residual variance	28 items	Factor loading	Residual variance	8 items	Factor loading	Residual variance
EDDEP01	0.733	0.462	EDDEP04	0.928	0.139	EDDEP04	0.924	0.147
EDDEP03	0.763	0.418	EDDEP05	0.9019	0.188	EDDEP05	0.888	0.212
EDDEP04	0.922	0.151	EDDEP06	0.901	0.189	EDDEP06	0.910	0.172
EDDEP05	0.893	0.203	EDDEP07	0.825	0.319	EDDEP17	0.891	0.206
EDDEP06	0.894	0.200	EDDEP09	0.900	0.190	EDDEP22	0.905	0.180
EDDEP07	0.826	0.317	EDDEP14	0.852	0.274	EDDEP29	0.900	0.190
EDDEP08	0.793	0.371	EDDEP17	0.877	0.232	EDDEP36	0.925	0.145
EDDEP09	0.897	0.195	EDDEP19	0.904	0.182	EDDEP41	0.944	0.109
EDDEP11	0.530	0.719	EDDEP21	0.846	0.284
EDDEP12	0.796	0.366	EDDEP22	0.918	0.158
EDDEP14	0.843	0.289	EDDEP23	0.823	0.323
EDDEP15	0.609	0.629	EDDEP26	0.868	0.247
EDDEP16	0.820	0.328	EDDEP27	0.870	0.243
EDDEP17	0.872	0.239	EDDEP28	0.823	0.323
EDDEP18	0.770	0.407	EDDEP29	0.898	0.194
EDDEP19	0.901	0.188	EDDEP30	0.802	0.357
EDDEP20	0.773	0.403	EDDEP31	0.863	0.254
EDDEP21	0.835	0.304	EDDEP35	0.861	0.259
EDDEP22	0.904	0.183	EDDEP36	0.911	0.169
EDDEP23	0.816	0.335	EDDEP39	0.879	0.226
EDDEP24	0.710	0.496	EDDEP41	0.938	0.120
EDDEP26	0.853	0.272	EDDEP42	0.799	0.362
EDDEP27	0.861	0.258	EDDEP44	0.827	0.317
EDDEP28	0.813	0.339	EDDEP45	0.832	0.308
EDDEP29	0.901	0.189	EDDEP46	0.890	0.308
EDDEP30	0.826	0.318	EDDEP48	0.880	0.226
EDDEP31	0.848	0.281	EDDEP50	0.795	0.368
EDDEP32	0.891	0.206	EDDEP54	0.859	0.261
EDDEP33	0.817	0.332
EDDEP34	0.779	0.394
EDDEP35	0.863	0.255
EDDEP36	0.900	0.190
EDDEP37	0.726	0.472
EDDEP38	0.802	0.356
EDDEP39	0.904	0.183
EDDEP40	0.841	0.293
EDDEP41	0.927	0.140
EDDEP42	0.792	0.373
EDDEP43	0.776	0.398
EDDEP44	0.838	0.298
EDDEP45	0.835	0.303
EDDEP46	0.819	0.330
EDDEP47	0.800	0.360
EDDEP48	0.871	0.241
EDDEP49	0.300	0.910
EDDEP50	0.788	0.380
EDDEP52	0.838	0.298
EDDEP53	0.614	0.623
EDDEP54	0.874	0.236
EDDEP55	0.860	0.260
EDDEP56	0.846	0.283

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