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Table 5 Results for construct validity testing

From: Urdu version of the neck disability index: a reliability and validity study

Differences in NDI-U total scores

Mean ± SD

P value

Patients

15.68 ± 8.52

<0.001

Healthy participants

0.00

Pearson’s correlation

R

P value

Between NDI-U and VASdisability

0.83

<0.001

Between NDI-U and VASpain

0.62

<0.001

  1. NDI-U Urdu version of the neck disability index, VAS Visual analogue scale