Table 4

Analysis of principal components with varimax rotation: weights (⩾0.4) assigned on each of seven factors

		Factor^4-150
		1	2	3	4	5	6	7
3	Having wind					0.541
5	Stomach pain					0.618
6	Indigestion					0.701
8	Waking with an attack of shortness of breath				0.500
9	Diarrhoea					0.510
10	A loss in weight							0.529
19	Nervous trouble	0.571
20	Feeling irritated for no particular reason	0.674
21	Lack of interest in sex	0.485
22	Difficulty concentrating	0.601					0.452
23	Feeling sleepy for most of the day	0.540
25	Wheezing or whistling in your chest				0.685
27	Problems doing up buttons on your clothes			0.457
28	Pain in your chest				0.432
29	Poor appetite							0.599
30	Feeling sick							0.514
31	Vomiting							0.520
32	Feeling unhappy and depressed	0.761
34	Waking up feeling tired and worn out	0.598
35	Losing sleep due to worry	0.640
36	Difficulty in standing up from a chair			0.571
37	Coughing				0.677
38	Having too little energy to start doing things	0.573
39	A feeling of heaviness in your chest				0.635
40	Fainting			0.428
41	Feeling too weak to complete what you are doing	0.441		0.439
42	Losing your balance			0.549
43	A poor memory	0.424					0.683
44	Itching skin		0.572
45	Having to make notes to help you remember things						0.669
47	Painful tingling in your hands or feet		0.463	0.437
50	Loss of sensation in your hands and feet		0.406	0.475
51	Difficulty in lifting down an object from just above your head			0.572
52	A loss of confidence in yourself	0.706
54	Head colds				0.480
55	Having to go back and check that you have done things	0.457					0.589
56	Feelings of anger which are difficult to control	0.683
57	Thinking that you were a worthless person	0.704
58	Clumsiness	0.442					0.447
59	A sore throat				0.480
61	Slurring your words						0.444
63	Nightmares	0.473
67	Phlegm or sputum (spit from the chest)				0.651
68	People telling you that you have a poor memory						0.657
70	Tiredness	0.566
71	A flare up of acne		0.410
72	Feeling stiff	0.401	0.402
73	Chest infections				0.719
74	Difficulty in grasping the meaning of what you read						0.544
75	Skin rashes		0.570
76	Cramps or spasms in your muscles		0.414
78	Double vision			0.455
79	Memory flashbacks	0.462
80	Shortness of breath when walking with other people of your own age			0.471	0.445
81	Feeling unsteady when walking			0.661
82	Waking up with a tight chest				0.649
83	Feeling incapable of making decisions about things	0.554					0.417
84	Feeling dizzy			0.489
85	Heartburn					0.549
86	Difficulty in saying what you want to say	0.463					0.484
87	Sudden changes of mood	0.697
89	Your eyes watering		0.461
90	Cold hands or feet		0.441
91	Tingling under your skin		0.533	0.417
92	Loss of appetite							0.611
94	Feeling bloated					0.408
95	Wishing you were dead and away from it all	0.639

↵4-150 Factor 1=psychological; factor 2=peripheral; factor 3=neurological; factor 4=respiratory; factor 5=gastrointestinal; factor 6=concentration; factor 7=appetite.