Table 4 Exploratory factor analysis of the SAQ for stable angina patients after removal of failed items (SAQ-CAN)
From: Psychometric evaluation of a Canadian version of the Seattle Angina Questionnaire (SAQ-CAN)
Hypothesised scale/item | Component/factor loadings | |||
|---|---|---|---|---|
Factor 1 | Factor 2 | Factor 3 | Factor 4 | |
Dressing | 0.767 | |||
Walking indoors | 0.566 | |||
Showering | 0.806 | |||
Walking more than a block | 0.631 | |||
Running or jogging | 0.888 | |||
Lifting or moving heavy objects | 0.779 | |||
Participate in strenuous sports | 0.858 | |||
Symptoms of Angina during strenuous activities | 0.525 | |||
Frequency of symptoms | 0.656 | |||
Frequency of use of medication | 0.481 | |||
Satisfaction that everything being done | 0.796 | |||
Satisfaction with doctor’s explanation | 0.759 | |||
Overall satisfaction with treatment | 0.889 | |||
Interference with enjoyment of life? | 0.733 | |||
Feelings about symptoms persistent | 0.705 | |||
Worry about heart attach/death | 0.494 | |||