Patient-reported outcome measures for non-specific neck pain validated in the Italian-language: a systematic review

Table 5 Psychometric properties of the core outcome measure index

Authors, year (language)	Population	Sample size	Dimensionality	Internal consistency	Reliability	Validity	Responsiveness
Authors, year (language)	Population	Sample size	Dimensionality	Internal consistency	Reliability	Validity	Distribution-based methods	Anchor-based methods
White et al., 2004 (English) [81]	Chronic mechanical NP	133	–	–	Single items: ICC = .64–.99	Pain: r = .73 VAS-P Other items: r = .60 NDI	–	–
Kovacs et al, 2008 (Spanish) [82]	Acute, subacute and chronic NP	167	–	Pain: α = .73 Disability: α = .84	ICC = .85 (95 % CI .75–.91)	r_p = .61 VAS-P r_p = .46 VAS-referred P r_p = .57 CSQ r_p = .69 NDI r_p = .71 NPQ r_p = -.60 SF-12 PF	Pain: ES = .79 Disability ES = .92	–
Miekisiak et al, 2014 (Polish) [83]	NP >4 weeks	123	1 factor	–	ICC = .88 (95 % CI .82–.92)	r_s = .62 NDI	MDC = 2/10 points SEM = .7/10 points	–
Monticone et al, 2014 (Italian) [22]	Chronic NP >3 months	103	–	–	ICC = .87 (95 % CI .81–.91)	Pain: r_p = .45 NRS Pain: r_p = .48 NPDS Function: r_p = .49–.55 NPDS QoL: r_p = -.44 EQ-5D Disability: r_p = .45–.48 NPDS	MDC = 1.8/10 points SEM = .65/10 points SRM = 1.23	AUC: .73 (.62–.85) (Sens = .55; Spec = .88)

α Cronbach’s alpha, AUC area under the curve, CI confidence interval, CSQ coping strategies questionnaire, EQ-5d Euroqol 5-dimensions, ES effect size, ICC intraclass correlation coefficient, MDC minimum detectable change, NDI neck disability index, NP neck pain, NPDS neck pain and disability scale, NPQ northwick park questionnaire, NRS numeric rating scale, QoL quality of life, r correlation coefficient, r _p Pearson’s correlation coefficient, r _s Sperman’s correlation coefficient, SEM standard error of measurement, Sens sensitivity, SF-12 PF 12-item short-form health survey physical functioning subscale, Spec specificity, SRM standardized response mean, VAS-P visual analogue scale for pain

ISSN: 2057-0082