Table 2.

Pattern matrix from exploratory factor analysis for the PSS-10 and PSS-4¹

Items	PSS-10				PSS-4
	C1	C2	U	SMC	C1	C2	U	SMC
Item 1: Upset by something happening unexpectedly?	0.7222	-0.031	0.478	0.381	-	-	-	-
Item 2: Unable to control the important things in your life?	0.6812	0.241	0.479	0.375	0.8332	0.165	0.278	0.263
Item 3: Nervous and stressed?	0.8012	0.013	0.359	0.472	-	-	-	-
Item 4: Confident about your ability to handle your personal problems?	-0.083	0.8102	0.338	0.399	-0.015	0.8962	0.197	0.274
Item 5: Things were going your way?	0.167	0.8022	0.330	0.468	0.254	0.8292	0.249	0.329
Item 6: Could not cope with all the things that you had to do?	0.6482	0.179	0.548	0.338	-	-	-	-
Item 7: Dealt successfully with irritating life hassles?	0.119	0.8592	0.248	0.549	-	-	-	-
Item 8: You were on top of things?	0.377	0.6962	0.374	0.468	-	-	-	-
Item 9: Angered because of things that were outside your control?	0.7572	0.055	0.424	0.413	-	-	-	-
Item 10: Difficulties were piling up so high that you could not overcome them?	0.7362	0.192	0.422	0.453	0.8662	0.044	0.248	0.241
Eigenvalue	3.951	2.051	-	-	1.887	1.419	-	-
Variance	0.335	0.265	-	-	0.381	0.377	-	-
Cumulative variance	0.335	0.600	-	-	0.381	0.758	-	-
AIC	392.10	77.32	-	-	87.55	NA	-	-
BIC	427.90	145.40	-	-	101.90	NA	-	-

PSS, Perceived Stress Scale; C1, component 1 (stress); C2, component 2 (coping); U, uniqueness; SMC, squared multiple correlation; AIC, Akaike information criterion; BIC, Bayesian information criterion; NA, not applicable.

¹The extraction method used was principal axis factoring; The rotation method was oblimin.

²Factor loadings of more than 0.60.