A new instrument for measuring anticoagulation-related quality of life: development and preliminary validation

Table 3 DASS factor analysis results: 2-factor solution

Item	Loading: Negative	Loading: Positive	Communality	New alpha	Item-total
1a	0.72	-0.16	0.54	0.91	0.66
1b	0.68	-0.14	0.48	0.91	0.63
1c	0.41	-0.15	0.19	0.92	0.37
1d	0.63	-0.29	0.48	0.91	0.56
1e	0.79	-0.20	0.66	0.91	0.72
2a	0.62	-0.21	0.43	0.91	0.56
2b	0.26	-0.09	0.07	0.92	0.24
2c	0.49	-0.11	0.26	0.91	0.46
2d	0.82	-0.11	0.68	0.91	0.77
4d	0.67	0.01	0.46	0.91	0.63
3a	0.79	0.02	0.62	0.91	0.74
3b	0.70	0.15	0.52	0.91	0.61
3c	0.59	0.21	0.39	0.91	0.53
3d	0.69	0.11	0.49	0.91	0.64
3e	0.67	0.20	0.48	0.91	0.61
3f	0.51	0.11	0.26	0.91	0.45
3g	0.69	0.20	0.53	0.91	0.64
4g	0.66	0.13	0.45	0.91	0.61
4i	0.54	0.23	0.34	0.91	0.47
3h	-0.10	0.41	0.17	0.80	0.33
4a	-0.01	0.66	0.43	0.74	0.57
4b	0.08	0.79	0.63	0.71	0.70
p4f	-0.24	0.57	0.38	0.78	0.42
4h	0.25	0.79	0.69	0.73	0.62
4j	0.03	0.74	0.55	0.74	0.58

The elements are rotated factor loadings (columns 2–3), communalities (column 4), Cronbach's alpha coefficient with the item in question deleted, calculated using standardized variables (column 5), and the item-total correlation, calculated using standardized variables (column 6).

ISSN: 1477-7525