Table 2 Predictor variables selected for multivariate orthogonal partial least square (O-PLS) regression model for cervical kinematics

TSK

Pain intensity

Arm, shoulder or

Age

SF-36 PF

Headache

hand pain

Symptom duration

SF-36 BP

Concentration difficulties

Tingling (pins and needles) in your arm, shoulder or hand

How physically active at leisure time have you been in the last year

SF-36 GH

Sleeping disturbance

Weakness in your arm, shoulder or hand

Can you, due to neck problems:

SF-36 VT

Car driving

   Bend the head forward

SF-36 SF

   Bend the head backward

SF-36 MH

   Bend the head to the right

DASH 1-19

   Bend the head to the left

   Turn the head to the right

   Turn the head to the left

   Run

Do you experience:

   Jaw disorder

   Difficulty swallowing

   Clumsiness of the hands

   Dizziness

   Balance disturbance

   Sensory disturbance

   Sensitivity to light

   Sensitivity to sound

   Nausea

   Neck pain during activity

   Neck pain during rest

   Neck stiffness

   Neck tenderness

   Neck tension

   Neck fatigue

   Neck weakness

   Neck crepitations

   Neck lockings