Table 3.

HADS test–retest reliability and scale variance analysis (n=200)

	Scale mean if items deleted	Scale variance if item deleted	Corrected item, total correlation	Cronbach's alpha if item deleted
A: I feel tense or 'wound up'.	16.71	45.96	0.59	0.83
D: I still enjoy the things I used to enjoy.	17.06	49.66	0.39	0.84
A: I get a sort of frightened feeling as if something awful is about to happen.	16.69	45.25	0.62	0.82
D: I can laugh and see the funny side of things.	16.70	46.91	0.56	0.83
A: Worrying thoughts go through my mind.	16.99	47.10	0.57	0.83
D: I feel cheerful.	17.29	46.64	0.60	0.82
A: I can sit at ease and feel relaxed.	16.79	47.94	0.53	0.83
D: I feel as if I am slowed down.	16.84	50.40	0.33	0.84
A: I get a sort of frightened feeling, like 'butterflies' in the stomach.	16.83	49.64	0.46	0.83
D: I have lost interest in my appearance.	17.20	50.81	0.28	0.84
A: I feel restless as I have to be on the move.	16.88	48.46	0.49	0.83
D: I look forward with enjoyment to things.	17.06	47.95	0.50	0.83
A: I get sudden feelings of panic.	16.77	46.91	0.69	0.82
D: I can enjoy a good book or radio or TV programme.	16.63	52.33	0.15	0.85

A, anxiety; D, depression.