Skip to main content

Table 2 Rotated component matrix of the 15D dimension values and instrument scores

From: Patient-reported outcomes in coronary artery disease: the relationship between the standard, disease-specific set by the International Consortium for Health Outcomes Measurement (ICHOM) and the generic health-related quality of life instrument 15D

Item at baseline Factor (% of variance explained)
1 (32.9%) 2 (9.8%) 3 (7.1%) 4 (5.8%) 5 (5.4%)
SAQ-PL 0.70 0.12 0.29 0.24 0.18
SAQ-AF 0.19 0.08 0.87 0.02 0.11
SAQ-QL 0.35 0.23 0.79 0.07 0.01
RDS  − 0.81  − 0.11  − 0.16  − 0.05 0.01
PHQ-2  − 0.21  − 0.62  − 0.20  − 0.04  − 0.22
15D mobility 0.74 0.01 0.05 0.18 0.12
15D vision 0.12 0.16 0.14 0.36 0.47
15D hearing 0.13  − 0.14 0.16 0.21 0.69
15D breathing 0.83 0.03 0.07 0.13 0.09
15D sleeping 0.25 0.37  − 0.02 0.61  − 0.14
15D eating 0.14  − 0.07 0.05 0.65 0.18
15D speech 0.12 0.46  − 0.12 0.16 0.53
15D excretion 0.05 0.14 0.01 0.67 0.17
15D usual activities 0.60 0.33 0.29 0.03 0.34
15D mental functions 0.13 0.54  − 0.14  − 0.06 0.50
15D discomfort and symptoms 0.37 0.28 0.28 0.35 0.07
15D depression 0.13 0.81 0.12 0.15  − 0.06
15D distress 0.02 0.82 0.15 0.15 0.06
15D vitality 0.62 0.46 0.18 0.20 0.06
15D sexual activity 0.45 0.31 0.08  − 0.16 0.36
  1. The highest loadings are bolded
  2. PHQ-2, two-item Patient Health Questionnaire; RDS, Rose Dyspnea Scale; SAQ-AF, Seattle Angina Questionnaire Angina Frequency; SAQ-PL, Seattle Angina Questionnaire Physical Limitation; SAQ-QL, Seattle Angina Questionnaire Quality of Life; SAQ-7, Seattle Angina Questionnaire short-form; 15D, 15-dimensional instrument