The Neck Disability Index is the most frequently evaluated question naire and shows positive results for internal consistency , content validity , structural validity , hypothesis testing , and responsiveness , but a negative result for reliability .
The other question naires show positive results , but the evidence for each measurement property is mostly limited , and at least 50 % of the information on measurement properties per question naire is lacking .
Purpose To critically appraise and compare the measurement properties of the original versions of  neck-specific question naires .
Evaluation of low back pain and assessment of lumbar corsets with and without back supports.
A method is described for evaluating the progress of patients with back pain .  Various symptoms were scored on analogue scales and spinal motion was measured by various techniques . These data were integrated to make subjective and objective indices respectively . Reasonable reproducibility of the measurements was obtained . This technique was used to eluci date the role of the lumbar support in surgical corsets in relief of back pain .  Sufferers from back pain were r and omly allocated to corsets with and without lumbar supports . There was significant improvement in those with a support compared with those without . On the other h and objective changes measured with the corset removed did not differ between the 2 groups . This study indicates that the spinal support in a lumbosacral corset makes a significant contribution towards the relief of symptoms
The Neck Disability Index is the most frequently evaluated question naire and shows positive results for internal consistency , content validity , structural validity , hypothesis testing , and responsiveness , but a negative result for reliability .
The other question naires show positive results , but the evidence for each measurement property is mostly limited , and at least 50 % of the information on measurement properties per question naire is lacking .
Purpose To critically appraise and compare the measurement properties of the original versions of  neck-specific question naires .