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

Romaine, Jacquelyn; Peach, George; Thompson, Matt; Hinchliffe, Robert J.; Bradley, Clare

doi:10.1186/s41687-019-0119-0

Journal of Patient-Reported Outcomes

Table 4 AneurysmSRQ Forced six-factor EFA - factor loadings, communalities and reliability coefficients

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

Symptom	Factor 1: Emotion	Factor 2: Appetite	Factor 3: Lower Limb	Factor 4: Cognitive	Factor 5: Malaise	Factor 6: Gastro	Communalities	Subscale alpha if item deleted
Emotional	*0.817*	0.167	0.025	−0.032	0.011	− 0.076	0.675	0.834
Panic	*0.746*	−0.183	−0.103	− 0.100	0.024	0.132	0.586	0.865
Angry	*0.724*	−0.055	0.140	0.076	0.005	0.040	0.667	0.847
Depressed	*0.668*	0.148	0.027	0.084	0.051	0.160	0.689	0.850
Worried	*0.663*	0.070	0.069	0.183	0.012	−0.049	0.570	0.851
Lost weight	−0.096	*0.783*	0.069	0.013	0.113	0.081	0.696	0.630
Poor appetite	0.150	*0.650*	0.010	0.000	−0.009	0.023	0.466	0.536
Nausea vomited	0.017	*0.487*	−0.025	−0.070	0.299	0.140	0.463	0.715
Pain in calves	−0.048	0.078	*0.731*	0.009	−0.014	0.026	0.535	0.709
Tingling legs/feet	0.005	0.182	*0.716*	−0.022	−0.107	0.062	0.537	0.712
Heaviness in legs	0.074	−0.159	*0.639*	0.045	0.081	0.121	0.578	0.679
Weakness in legs	0.025	−0.020	*0.445*	0.193	0.189	−0.006	0.377	0.735
Swollen legs	0.145	−0.223	*0.433*	−0.035	0.153	−0.008	0.322	0.751
Memory problems	−0.051	−0.085	− 0.130	*0.896*	0.034	0.075	0.777	0.726
Difficulty thinking	0.035	0.105	0.126	*0.820*	−0.070	−0.090	0.721	0.760
Difficulty concentrating	0.314	−0.058	0.130	*0.518*	−0.012	0.117	0.610	0.836
Minor Illnesses	−0.029	0.018	0.105	−0.052	*0.713*	−0.057	0.515	0.580
Diarrhoea	−0.045	0.012	−0.033	0.005	*0.633*	0.079	0.417	0.612
Feverish	0.090	0.174	−0.029	−0.035	*0.562*	−0.062	0.394	0.628
Headaches	0.094	−0.082	0.038	0.130	*0.456*	0.131	0.356	0.659
Bloated	−0.066	−0.021	0.178	−0.024	− 0.082	*0.637*	0.429	0.653
Abdominal pain	0.205	0.090	−0.056	0.111	0.060	*0.550*	0.517	0.650
Flatulence	−0.043	0.027	0.012	0.142	0.158	*0.549*	0.431	0.672
Indigestion	0.091	0.067	−0.034	−0.067	0.003	*0.512*	0.301	0.692
Percentage total variance	24.99	8.89	6.56	4.87	3.93	3.46
Items in scale	5	3	5	3	4	4
Alpha	0.88	0.72	0.76	0.84	0.69	0.73
ICC	0.69	0.47	0.69	0.82	0.59	0.80

Strongest factor loadings in bold

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