TABLE 3.

Factor analysis of subsample I.

Items	Factor loading						CITC value	Reason for deletion	Reason for reservation
	Dimension 1	Dimension 2	Dimension 3	Dimension 4	Dimension 5	Dimension 6
S1	0.051	0.702	0.035	0.053	0.151	0.056	0.420		D
S2	0.226	0.695	0.043	0.158	0.155	0.199	0.586	B
S3	0.252	0.345	0.008	0.053	0.151	0.530	0.485	A, B
S4	0.116	0.682	0.170	0.195	0.192	-0.004	0.553	B
S5	0.125	0.638	0.226	0.172	0.255	0.255	0.659	B
S6	0.135	0.142	0.144	0.135	0.219	0.697	0.509		D
S7	0.102	0.465	0.155	0.261	0.459	0.202	0.635	A, B
S8	-0.004	0.118	0.471	0.125	-0.035	0.531	0.428	A, B
S9	0.113	0.127	0.175	0.655	0.101	0.217	0.511	B
S10	0.118	0.222	0.206	0.650	0.230	0.072	0.571	B
S11	0.206	0.081	0.000	0.726	0.206	0.055	0.467
S12	0.202	0.274	0.058	0.648	0.280	-0.015	0.557	B
S13	0.755	0.048	0.109	0.126	0.010	0.264	0.502
S14	0.763	0.147	0.117	0.130	-0.012	0.114	0.503
S15	0.735	0.167	0.132	0.140	0.136	0.043	0.542
S16	0.572	0.139	0.244	0.039	0.300	-0.019	0.515	A, B
S17	0.707	-0.004	0.145	0.124	0.172	0.104	0.488	C
S18	0.369	0.237	0.623	0.219	0.060	-0.086	0.590	A, B
S19	0.405	0.276	0.627	0.176	0.157	-0.020	0.669	A, B
S20	0.433	0.135	0.522	0.245	0.146	0.120	0.637	A, B
S21	0.452	0.159	0.386	0.171	0.306	0.137	0.634	A, B
S22	0.134	0.365	0.054	0.185	0.638	0.154	0.585	A, B
S23	0.147	0.241	0.220	0.165	0.652	0.218	0.628		D
S24	0.088	0.208	0.216	0.310	0.596	0.084	0.576	A, B
S25	0.107	0.114	0.721	-0.022	0.206	0.181	0.509
S26	0.201	0.153	0.579	0.109	0.287	0.328	0.638	A, B

Deletion criteria:

A: There were multiple factor loads, and the minimum factor load was 0.30.

B: There was no main factor load, and the minimum value of main factor load was 0.70.

C: The CITC value was less than 0.50.

Reservation criteria:

D: Factor retained to ensure that there was at least one item in each dimension without dimension reduction.