Factor analysis with varimax rotation of CRQ
| Loading | Percentage of explained variance | |
|---|---|---|
| Factor 1 | 45.9 | |
| Worn out or sluggish (f) | 0.785 | |
| Relaxed and free of tension (e) | 0.765 | |
| Low in energy (f) | 0.742 | |
| Happy, satisfied, pleased (e) | 0.717 | |
| Discouraged or down in the dumps (e) | 0.714 | |
| Complete control of breathing problems (m) | 0.705 | |
| How much energy (f) | 0.647 | |
| Confident and sure (m) | 0.574 | |
| Factor 2 | 13.1 | |
| Fear or panic (m) | 0.846 | |
| Upset or scared (m) | 0.774 | |
| Frustrated or inpatient (e) | 0.666 | |
| Embarrassed by coughing (e) | 0.621 | |
| Restless, tense or uptight (e) | 0.616 | |
| Upset, worried or depressed (e) | 0.609 | |
| Factor 3 | 5.8 | |
| Item 4 (d) | 0.794 | |
| Item 5 (d) | 0.792 | |
| Item 3 (d) | 0.786 | |
| Item 2 (d) | 0.759 | |
| Item 1 (d) | 0.712 | |
| How tired have you felt? (f) | 0.571 |
d = dyspnoea; f = fatigue; e = emotions; m = mastery.