Development, validity and reliability of the Italian version of the Copenhagen neck functional disability scale

Table 2 Descriptive Statistics, Factor Loadings, and item-total Correlations of the Items of the Questionnaire

Item	Description	Mean (SD)	Factor Loading	Item Total Correlation	Item rest Correlation
1	To sleep without pain	0.71 (0.77)	0.37	0.46	0.35
2	Daily activities levels	0.65 (0.70)	0.76	0.76	0.69
3	Daily activities without help from other	0.15 (0.49)	0.46	0.47	0.40
4	To manage clothes	0.21 (0.51)	0.49	0.52	0.45
5	To brush teeth	0.62 (0.75)	0.41	0.48	0.37
6	To spend time at home	0.63 (0.77)	0.73	0.73	0.66
7	To lift objects (2–4 kg)	0.92 (0.84)	0.46	0.52	0.41
8	To read	0.96 (0.83)	0.53	0.59	0.49
9	Headache	1.45 (0.71)	0.13	0.24	0.12
10	Ability to concentrate	0.97 (0.78)	0.52	0.58	0.48
11	Usual leisure/free time	0.88 (0.73)	0.61	0.62	0.53
12	To remain in bed	0.43 (0.68)	0.40	0.45	0.35
13	Emotional relationship	0.426 (0.694)	0.55	0.61	0.52
14	Social contacts	0.401 (0.682)	0.64	0.65	0.57
15	NP future influence	1.031 (0.814)	0.45	0.49	0.38