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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