Table 4 Psychometric properties of the neck bournemouth questionnaire
| Authors, year (language) | Population | Sample size | Dimensionality | Internal consistency | Reliability | Validity | Responsiveness | |
|---|---|---|---|---|---|---|---|---|
| Distribution-based methods | Anchor-based methods | |||||||
| Bolton & Humphreys, 2002 (English) [76] | NP | 102 | – | α = .87–.92 | ICC = .65 |
r = .50–.71 NDI r = .44–.63 CNFDS |
ES = 1.67 SRM = 1.43 | – |
| Bolton, 2004 (English) [80] | NP | 71 | – | – | – | – |
ES = 1.67 SRM = 1.01 | RCI (>1.96) = 13 points |
| Gay et al, 2007 (English) [59] | Chronic NP > 3 months | 23 | – | α = .85–.89 | – |
r = .77–.80 NDI r = .37–.62 VAS-P |
ES = 1.28 SRM = 1.17 | – |
| Martel et al, 2009 (French) [77] | Chronic NP | 68 | – | – |
r = .97 (95 % CI95–.98) ICC = .97 (95 % CI.95–.98) | r = .61–.67 NDI |
ES = .56 SRM = .61 | RCI (>1.96) = 4.4 points |
|
Soklic et al, 2012 (German) [78] | NP | 102 | – | α = .79–.82 | ICC = .99 (95 % CI.98–.99) |
r = .68–.76 NDI r = .69–.80 NPDS | SRM = .73–1.20 | – |
|
Geri et al, 2014 (Italian) [23] |
Chronic NP >3 months | 96 | 2 factors: pain & functioning (F#1); anxiety & depression (F#2) |
Total score: α = .89 (95 % CI.84–.92) F#1: α = .88 (95 % CI.83–.92) F#2:α = .90 (95 % CI.86–.94) | – |
r = .67–.70 NPDS r = .63–.73 NRS | – |
MCID = 5.5 points AUC = .72 (Sens. 75 %; Spec. 60 %) |
| Geri et al, 2015 (Italian) [79] | Chronic NP | 161 | 2 factors: pain & functioning (F#1); anxiety & depression (F#2) |
PSI (F#1) = .80 PSI (F#2) = .77 | – | – | – | – |