Table 2

Factor analysis for a three factor solution, as suggested by parallel analysis

	Varimax rotated loadings
Item	Factor 1	Factor 2	Factor 3
1. Speech	0.92	0.16	0.12
2. Salivation	0.87	0.18	0.12
3. Swallowing	0.86	0.32	0.18
4. Handwriting	0.15	0.18	0.84
5. Cutting food and handling utensils	0.15	0.22	0.86
6. Dressing and hygiene	0.11	0.28	0.91
7. Turning in bed and adjusting bedclothes	0.17	0.23	0.92
8. Walking	0.10	0.29	0.78
9. Climbing stairs	0.10	0.31	0.79
10. Dyspnoea	0.28	0.82	0.32
11. Orthopnoea	0.31	0.74	0.39
12. Respiratory insufficiency	0.21	0.75	0.32