Psychometric properties and modification of the 15-item geriatric depression scale among Chinese oldest-old and centenarians: a mixed-methods study

Table 3 Factors and item loadings of three Geriatrics Depression Scale models

Model	GDS-15				GDS-12			GDS-10
Factor	1	2	3	4	1	2	3	1	2	3
Item-1	0.516	0.303	-0.238	0.136	0.437	0.336	-0.136	——	——	——
Item-2	0.058	0.161	0.139	0.625	——	——	——	——	——	——
Item-3	0.634	0.218	0.344	-0.017	0.611	0.205	0.333	0.742	0.217	0.215
Item-4	0.734	0.065	0.127	-0.113	0.684	0.157	-0.018	0.823	0.058	-0.005
Item-5	0.249	0.695	0.089	0.011	0.197	0.772	0.091	0.165	0.766	0.062
Item-6	0.103	0.121	0.760	0.058	0.190	0.115	0.734	0.132	0.105	0.795
Item-7	0.374	0.684	-0.038	0.059	0.255	0.774	-0.061	0.286	0.761	-0.071
Item-8	0.404	0.060	0.058	0.380	0.433	0.039	0.098	——	——	——
Item-9	-0.055	-0.049	0.053	0.845	——	——	——	——	——	——
Item-10	-0.066	0.045	0.790	0.111	0.029	-0.014	0.782	0.022	0.014	0.819
Item-11	0.613	0.475	0.041	0.109	0.573	0.370	0.113	0.629	0.396	0.014
Item-12	0.348	0.160	0.634	0.075	0.310	0.052	0.655	0.473	0.125	0.601
Item-13	-0.11	0.728	0.221	0.113	-0.166	0.638	0.409	-0.112	0.716	0.236
Item-14	0.561	-0.032	0.421	0.113	0.668	0.006	0.256	0.688	0.051	0.389
Item-15	0.348	-0.401	0.464	0.138	——	——	——	——	——	——
Eigenvalue	2.425	2.086	2.273	1.362	2.286	2.015	1.977	2.154	2.005	1.927
Variance, %	16.17	13.90	15.15	9.08	19.05	16.79	16.48	21.54	20.05	19.27
	54.29%				52.32%			60.86%

ISSN: 1471-2318