Table 2.

Item and scale score statistics (n = 6622)

			Score distribution, %
	Mdn (q1-q3)	M (SD)	0	1	2	3	Missing data
HADS Anxiety	2 (1–5)	3.23 (3.23)
1. I feel tense and wound up	0 (0–1)	0.53 (0.63)	52.8	41.3	4.1	1.0	0.8
3. I get sort of frightened as if something awful is about to happen	0 (0–1)	0.34 (0.59)	70.7	25.3	3.0	1.0	0.8
5. Worrying thoughts go through my mind	0 (0–1)	0.49 (0.71)	60.3	30.6	5.9	2.2	1.4
7. I can sit at ease and feel relaxed	1 (0–1)	0.59 (0.64)	47.9	44.7	6.4	0.7	0.2
9. I get sort of frightened feeling like “butterflies in the stomach”	0 (0–1)	0.42 (0.58)	62.0	33.8	3.0	0.5	0.6
11. I feel restless as if I have to be on the move	0 (0–1)	0.60 (0.73)	53.1	33.7	11.6	1.1	0.6
13. I get sudden feelings of panic	0 (0–0)	0.25 (0.52)	77.7	18.8	2.4	0.6	0.6
HADS Depression	3 (1–5)	3.26 (3.04)
2. I still enjoy the things I used to enjoy	0 (0–1)	0.45 (0.59)	58.7	37.0	2.7	0.7	0.9
4. I can laugh and see the funny side of things	0 (0–1)	0.31 (0.57)	72.6	22.7	3.3	0.6	0.7
6. I feel cheerful	0 (0–1)	0.34 (0.60)	72.2	21.3	5.3	0.6	0.7
8. I feel as if I have slowed down	1 (0–1)	0.76 (0.69)	36.1	53.4	7.7	2.2	0.6
10. I have lost interest in my appearance	0 (0–1)	0.57 (0.72)	54.4	34.0	9.6	1.2	0.8
12. I look forward with enjoy to things	0 (0–1)	0.53 (0.70)	56.8	33.2	8.0	1.2	0.7
14. I can enjoy a good book, or radio or TV program	0 (0–0)	0.29 (0.59)	76.4	19.0	2.7	1.5	0.4

Floor and/or ceiling effects are marked in bold, defined if more than 20% of the participants used the lowest and/or highest possible scores

HADS Hospital Anxiety and Depression Scale