Table 2.
Symptom Domains Derived by Varimax Rotation and Corresponding Symptom Variables
| Symptom description | Factor loading | Standardized scoring coefficients |
|---|---|---|
| Factor 1: upper body, no chest | ||
| Arm location | 0.65 | 0.18 |
| Hand location | 0.61 | 0.17 |
| Arm or shoulder pain | 0.60 | 0.18 |
| Shoulder location | 0.58 | 0.13 |
| Numbness, tingling in arm or hand | 0.57 | 0.14 |
| Neck location | 0.51 | 0.12 |
| Neck pain | 0.48 | 0.10 |
| Numbness | 0.48 | 0.10 |
| Back location | 0.42 | 0.08 |
| Jaw location | 0.42 | 0.10 |
| Factor 2: chest, general malaise | ||
| Chest pressure | 0.62 | 0.22 |
| Chest tightness | 0.57 | 0.17 |
| Pressure | 0.51 | 0.13 |
| Weakness, fatigue, faintness | 0.50 | 0.14 |
| Shortness of breath | 0.47 | 0.10 |
| Tightness | 0.45 | 0.10 |
| Feel lousy, generally blah | 0.43 | 0.11 |
| Chest discomfort | 0.40 | 0.07 |
| Factor 3: abdominal discomfort | ||
| Heart burn, indigestion | 0.52 | 0.15 |
| Esophagus location | 0.52 | 0.15 |
| During or after meals | 0.51 | 0.14 |
| Description: indigestion | 0.51 | 0.15 |
| Throat location | 0.50 | 0.14 |
| Stomach location | 0.50 | 0.13 |
| Description: burning | 0.49 | 0.12 |
| Abdominal pain | 0.44 | 0.11 |
| Factor 4: typical triggers/relievers | ||
| Lower body exertion trigger | 0.63 | 0.22 |
| Stops when stopping activity | 0.59 | 0.20 |
| Whole body exertion trigger | 0.57 | 0.19 |
| Relieved by rest | 0.50 | 0.14 |
| Exertion or emotional stress trigger | 0.49 | 0.15 |
| Pain goes away with rest | 0.49 | 0.15 |
| Strong emotions, stress trigger | 0.41 | 0.10 |
| Upper body exertion trigger | 0.40 | 0.09 |