Table 5.

Summary results for each neck-pain cases group after 20 weeks of intervention (completers only).

Characteristics	3WS: post-pre (SD) (n = 39)	3MS: post-pre (SD) (n = 37)	Ref.: post-pre (SD) (n = 48)	Difference 3WS versus REF (95% CI) (SE)	P	Difference 3MS versus REF (95% CI) (SE)	P
Neck pain (3 months)	−3.1 ± 2.2	−2.4 ± 1.9	−1.2 ± 2.6	−1.9 ± 0.4	0.000*	−1.1 ± 0.5	0.022*
Neck pain (7 days)	−2.4 ± 2.7	−1.8 ± 2.1	−0.6 ± 2.5	−1.7 ± 0.5	0.000*	−1.4 ± 0.5	0.003*
Right shoulder pain (3 months)	−1.7 ± 2.5	−1.3 ± 3.2	−0.7 ± 2.4	−1.1 ± 0.4	0.002*	−0.8 ± 0.5	0.096
Right shoulder pain (7 days)	−1.2 ± 2.8	−0.9 ± 2.9	−0.7 ± 2.5	−0.8 ± 0.4	0.062	−0.7 ± 0.5	0.170
Left shoulder pain (3 months)	−1.4 ± 2.2	−1.4 ± 2.2	−0.6 ± 2.2	−0.8 ± 0.4	0.024*	−0.6 ± 0.4	0.156
Left shoulder pain (7 days)	−0.8 ± 2.6	−1.0 ± 2.3	−0.9 ± 2.4	−0.2 ± 0.4	0.634	−0.2 ± 0.4	0.727
Headache (pain scale 0–10)	−0.5 ± 2.8	−0.9 ± 1.5	0.5 ± 2.5	−1.4 ± 0.5	0.008*	−1.3 ± 0.4	0.001*
Headache (days of last month)	−0.9 ± 4.7	−1.4 ± 3.1	0.9 ± 4.6	−2.3 ± 0.9	0.010*	−2.1 ± 0.8	0.006*

Changes in post-pre values are absolute and not adjusted. Values are means with standard deviation presented for each group (neck-pain and completers). Differences are estimated as the difference between means (SE), with 95% confidence intervals, based on the 1-factor analyses of covariance with the level at baseline and sex as a covariate. *Significant change.