Psychometric Evaluation of the Perceived Stress Scale in Multiple Sclerosis

Table 2

Factor analysis results: factor loadings.

Item	PSS-14						PSS-10						PSS-4
	1F	2F-Stress	2F-Coping	Bifactor-general	Bifactor-Stress	Bifactor-Coping	1F	2F-Stress	2F-Coping	Bifactor-general	Bifactor-Stress	Bifactor-Coping	1F	2F-Stress	2F-Coping
PSS #1	.66	.70		.54	.53		.68	.71		.57	.55
PSS #2	.82	.88		.77	.33		.83	.87		.81	.25		.81	.84
PSS #3	.74	.78		.60	.61		.76	.79		.66	.52
PSS #4	.49		.52	.41		.66
PSS #5	.76		.79	.71		.55
PSS #6	.84		.87	.83		.29	.81		.85	.81		.24	.83		.84
PSS #7	.83		.86	.86		.08	.83		.86	.79		.34	.84		.85
PSS #8	.67	.71		.63	.29		.68	.70		.67	.17
PSS #9	.77		.79	.76		.20	.75		.78	.73		.26
PSS #10	.86		.89	.88		.09	.85		.89	.81		.41
PSS #11	.62	.66		.54	.40		.64	.67		.57	.38
PSS #12	.15	.17		.05	.37
PSS #13	.63		.65	.67		−.03
PSS #14	.78	.83		.71	.40		.78	.82		.75	.30		.75	.76

1F: one factor model, 2F: two factor model, PSS: Perceived Stress Scale.