Translation and evaluation of the HeartQoL in patients with coronary heart disease in Iceland

Table 2 HeartQoL item analysis (n = 396)

		Item score distribution, %
“Have you been bothered by …”	Median (Q1, Q3)	No 3	Little 2	Some 1	A lot 0	Missing	Skew ^a	Kurt ^a	ITC ^b	α item deleted ^c
Physical subscale
1. Walking indoors on level ground?	3 (2, 3)	72	12	11	2	2	-1.69	1.66	0.74	0.95
2. Gardening, vacuuming, or carrying groceries?	3 (1, 3)	51	17	18	11	3	-0.77	-0.84	0.86	0.95
3. Climbing a hill or a flight of stairs without stopping?	2 (1, 3)	30	21	28	20	2	-0.08	-1.38	0.86	0.95
4. Walking more than 100 yards at a brisk pace?	2 (1, 3)	34	18	26	17	4	-0.19	-1.39	0.85	0.95
5. Lifting or moving heavy objects?	2 (1, 3)	35	21	25	16	3	-0.28	-1.30	0.81	0.95
6. Feeling short of breath?	1 (1, 2)	19	26	38	15	2	0.13	-1.01	0.77	0.95
7. Being physically restricted?	2 (1, 3)	37	25	28	7	4	-0.36	-1.09	0.83	0.95
8. Feeling tired, fatigued, low on energy?	1 (1, 2)	15	24	38	20	4	0.25	-0.93	0.76	0.95
13. Being limited in doing sports or exercise?	2 (1, 3)	27	18	26	19	11	-0.04	-1.40	0.68	0.95
14. Working around the house or yard?	2 (1, 3)	43	22	22	9	4	-0.58	-0.99	0.88	0.95
Emotional subscale
9. Not feeling relaxed and free of tension?	2 (1, 3)	39	25	25	6	4	-0.46	-1.02	0.74	0.88
10. Feeling depressed?	3 (2, 3)	61	21	13	2	3	-1.27	0.54	0.81	0.85
11. Being frustrated?	2 (2, 3)	42	30	20	4	4	-0.62	-0.70	0.77	0.87
12. Being worried?	2 (1, 3)	35	32	23	7	2	-0.47	-0.83	0.77	0.87

^a A normal distribution has a skewness and kurtosis value close to 0
^b Item-total correlations based on polyserial correlations, corrected for overlap
^c Ordinal alpha if item deleted

ISSN: 1477-7525