Psychometric validation of three new condition-specific questionnaires to assess quality of life, symptoms and treatment satisfaction of patients with aortic aneurysm

Journal of Patient-Reported Outcomes

Table 7 AneurysmSRQ composite symptom score - factor loadings, communalities and reliability coefficients, ordered by factor loading

Symptom	Factor Loading	Communalities	Alpha if item deleted (Overall alpha = 0.906)
Depressed or low	0.764	0.583	0.898
Generally weak	0.727	0.528	0.898
Tired or lethargic	0.702	0.493	0.898
Irritable or angry	0.683	0.466	0.900
Difficulty concentrating	0.670	0.449	0.899
Worried or nervous	0.647	0.419	0.901
Emotional or upset	0.602	0.363	0.901
Abdominal pain	0.577	0.333	0.902
Episodes too hot or cold	0.539	0.290	0.902
Feelings of panic	0.535	0.286	0.903
Pain or discomfort in back	0.520	0.270	0.903
Weakness in legs	0.518	0.268	0.902
Trembling e.g. limbs	0.516	0.266	0.904
Pain or discomfort in groin	0.482	0.233	0.903
Unsteady or uncoordinated	0.475	0.225	0.903
Headaches	0.467	0.218	0.903
Heaviness in legs	0.460	0.212	0.903
Excessive sweating	0.459	0.211	0.904
Flatulence or belching	0.454	0.207	0.904
Memory problems	0.439	0.193	0.904
Difficulty thinking	0.439	0.192	0.904
Dizzy or lightheaded	0.435	0.190	0.904
Avoided sexual activity	0.422	0.178	0.905
Feverish	0.403	0.163	0.905
Percentage total variance = 30.15		Number of items in scale = 24	ICC = 0.81