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Table 2 Item descriptive statistics.

From: Translation of the Neck Disability Index and validation of the Greek version in a sample of neck pain patients

  Day 1 Day 8
Item Missing (%) Mean SD Missing (%) Mean SD
Pain intensity 0.0 0.95 1.07 0.0 0.63 0.96
Personal care 0.0 0.72 0.94 0.0 0.55 0.88
Lifting 10.8 1.81 1.84 10.8 1.60 1.66
Reading 9.2 1.51 1.42 9.2 1.22 1.35
Headaches 0.0 1.83 1.51 0.0 1.66 1.33
Concentration 0.0 0.94 1.34 0.0 0.77 1.01
Work 0.0 1.23 1.33 0.0 0.97 1.14
Driving 44.6 1.08 1.32 44.6 0.89 1.09
Sleeping 0.0 1.58 1.71 0.0 1.63 1.67
Recreation 1.5 0.97 1.25 1.5 0.86 1.23