Table 3.

Changes in outcome measures at three and 12 months after randomisation

Outcome	Brief intervention	Usual physiotherapy	Difference (95%CI)	P value (analysis of covariance)
At 3 months' follow up
Northwick Park neck pain score	−1.481	−2.101	0.620 (−0.444 to 1.684)	0.2518
SF-36:
Physical functioning	−1.167	1.834	−3.001 (−7.363 to 1.361)	0.1765
Social functioning	2.222	3.005	−0.784 (−6.460 to 4.893)	0.7858
Role-physical	1.932	4.638	−2.706 (−8.646 to 3.234)	0.3703
Role-emotional	−0.179	4.355	−4.533 (−10.020 to 0.954)	0.1049
Mental health	−2.278	2.399	−4.677 (−8.371 to −0.983)	0.0133*
Energy and fatigue	−2.221	2.327	−4.548 (−8.804 to −0.292)	0.0363*
Pain	10.406	11.482	−1.076 (−6.026 to 3.874)	0.6688
General health perception	−4.787	−4.441	−0.346 (−4.076 to 3.385)	0.8552
Tampa kinesophobia score	−1.038	1.196	−2.234 (−3.729 to −0.739)	0.0036*
Distress	−0.693	−0.709	0.016 (−0.520 to 0.552)	0.9545
At 12 months' follow up†
Northwick Park neck pain score	−0.840	−2.825	1.985 (0.452 to 3.518)	0.0114
SF-36:
Physical functioning	4.755	7.015	−2.260 (−10.004 to 5.483)	0.5656
Social functioning	−6.466	0.350	−6.817 (−13.445 to 0.141)	0.0548
Role-physical	−0.637	6.064	−6.701 (−12.961 to −0.441)	0.0360*
Role-emotional	−7.268	4.446	−11.715 (−17.571 to −5.858)	0.0001*
Mental health	−9.568	−0.205	−9.362 (−15.053 to −3.671)	0.0014*
Energy and fatigue	−6.735	2.506	−9.241 (−14.663 to −3.819)	0.0009*
Pain	4.994	11.742	−6.749 (−13.18 to −0.380)	0.0379*
General health perception	−9.220	−1.074	−8.146 (−12.347 to −3.946)	0.0002*
Tampa kinesophobia score	−0.309	−0.224	−0.085 (−1.755 to 1.585)	0.9205
Distress	−0.662	−1.047	0.385 (−0.282 to 1.052)	0.2564

^*Significant difference at the 5% level (negative Northwick Park questionnaire, Tampa scores, and distress scores indicate improvement; positive SF-36 scores indicate improvement).

^†Adjusted for baseline value of the response variable.