Table 3.

 Comparison of mean weekly changes* (95% confidence interval) in outcome measures in control group with those of collar and physiotherapy groups during first six weeks

Outcome measure	Overall weekly change	Additional weekly change with collar	Additional weekly change with physiotherapy
Arm pain (VAS) (mm)†	−3.1 (−4.0 to −2.2) (P<0.001)	−1.9 (−3.3 to −0.5) (P=0.006)	−1.9 (−3.3 to −0.8) (P=0.007)
Neck pain (VAS) (mm)†	−0.9 (−2.0 to 0.3) (P=0.11)	−2.8 (−4.2 to −1.3) (P<0.001)	−2.4 (−3.9 to −0.8) (P=0.002)
NDI‡	−1.4 (−1.9 to −0.9) (P<0.001)	−0.9 (−1.6 to −0.1) (P=0.024)	−0.8 (−1.8 to 0.2) (P=0.090)

*On basis of generalised estimating equations (β coefficients).

†Visual analogue scale from 0=no pain to 100=worst pain ever.

‡Neck disability index: 10 point scale specific for neck pain with 10 items on functional status; high scores represent poor functional status.